Apply FILAMENT_LOAD_UNLOAD_GCODES to example configs

7 years ago · 8704e533da
36 changed files with 1116 additions and 792 deletions
--- a/Marlin/src/config/default/Configuration_adv.h
+++ b/Marlin/src/config/default/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/AlephObjects/TAZ4/Configuration_adv.h
+++ b/Marlin/src/config/examples/AlephObjects/TAZ4/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/Anet/A6/Configuration_adv.h
+++ b/Marlin/src/config/examples/Anet/A6/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/Anet/A8/Configuration_adv.h
+++ b/Marlin/src/config/examples/Anet/A8/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/Azteeg/X5GT/Configuration_adv.h
+++ b/Marlin/src/config/examples/Azteeg/X5GT/Configuration_adv.h
@ -882,29 +882,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/BQ/Hephestos/Configuration_adv.h
+++ b/Marlin/src/config/examples/BQ/Hephestos/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/BQ/Hephestos_2/Configuration_adv.h
+++ b/Marlin/src/config/examples/BQ/Hephestos_2/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/BQ/WITBOX/Configuration_adv.h
+++ b/Marlin/src/config/examples/BQ/WITBOX/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/Cartesio/Configuration_adv.h
+++ b/Marlin/src/config/examples/Cartesio/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 1         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  //#define FILAMENT_CHANGE_UNLOAD_LENGTH 100 // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 1         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  //#define FILAMENT_CHANGE_UNLOAD_LENGTH 100 // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/Creality/CR-10/Configuration_adv.h
+++ b/Marlin/src/config/examples/Creality/CR-10/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 #define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 4         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 420   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 8     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 120       // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 3 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  #define PARK_HEAD_ON_PAUSE                  // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 4         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 420   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 8     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 120       // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 6       // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  #define PARK_HEAD_ON_PAUSE                  // Park the nozzle during pause and filament change.
  #define HOME_BEFORE_FILAMENT_CHANGE         // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/Felix/Configuration_adv.h
+++ b/Marlin/src/config/examples/Felix/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/FolgerTech/i3-2020/Configuration_adv.h
+++ b/Marlin/src/config/examples/FolgerTech/i3-2020/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 #define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  #define PARK_HEAD_ON_PAUSE                  // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  #define PARK_HEAD_ON_PAUSE                  // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/Infitary/i3-M508/Configuration_adv.h
+++ b/Marlin/src/config/examples/Infitary/i3-M508/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/MakerParts/Configuration_adv.h
+++ b/Marlin/src/config/examples/MakerParts/Configuration_adv.h
@ -882,29 +882,38 @@
 */
 #define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/Malyan/M150/Configuration_adv.h
+++ b/Marlin/src/config/examples/Malyan/M150/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/Malyan/M200/Configuration_adv.h
+++ b/Marlin/src/config/examples/Malyan/M200/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/Micromake/C1/enhanced/Configuration_adv.h
+++ b/Marlin/src/config/examples/Micromake/C1/enhanced/Configuration_adv.h
@ -882,29 +882,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/Mks/Sbase/Configuration_adv.h
+++ b/Marlin/src/config/examples/Mks/Sbase/Configuration_adv.h
@ -889,29 +889,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/RigidBot/Configuration_adv.h
+++ b/Marlin/src/config/examples/RigidBot/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/SCARA/Configuration_adv.h
+++ b/Marlin/src/config/examples/SCARA/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/Sanguinololu/Configuration_adv.h
+++ b/Marlin/src/config/examples/Sanguinololu/Configuration_adv.h
@ -870,29 +870,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/TinyBoy2/Configuration_adv.h
+++ b/Marlin/src/config/examples/TinyBoy2/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/UltiMachine/Archim2/Configuration_adv.h
+++ b/Marlin/src/config/examples/UltiMachine/Archim2/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/Velleman/K8200/Configuration_adv.h
+++ b/Marlin/src/config/examples/Velleman/K8200/Configuration_adv.h
@ -892,29 +892,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/Velleman/K8400/Configuration_adv.h
+++ b/Marlin/src/config/examples/Velleman/K8400/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 5         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 600   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 100   // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 5         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 600   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 100   // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/Wanhao/Duplicator
+++ b/Marlin/src/config/examples/Wanhao/Duplicator
@ -883,29 +883,38 @@
 */
 #define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/delta/FLSUN/auto_calibrate/Configuration_adv.h
+++ b/Marlin/src/config/examples/delta/FLSUN/auto_calibrate/Configuration_adv.h
@ -883,29 +883,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/delta/FLSUN/kossel_mini/Configuration_adv.h
+++ b/Marlin/src/config/examples/delta/FLSUN/kossel_mini/Configuration_adv.h
@ -883,29 +883,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/delta/generic/Configuration_adv.h
+++ b/Marlin/src/config/examples/delta/generic/Configuration_adv.h
@ -883,29 +883,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/delta/kossel_mini/Configuration_adv.h
+++ b/Marlin/src/config/examples/delta/kossel_mini/Configuration_adv.h
@ -883,29 +883,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/delta/kossel_pro/Configuration_adv.h
+++ b/Marlin/src/config/examples/delta/kossel_pro/Configuration_adv.h
@ -888,29 +888,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/delta/kossel_xl/Configuration_adv.h
+++ b/Marlin/src/config/examples/delta/kossel_xl/Configuration_adv.h
@ -883,29 +883,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/gCreate/gMax1.5+/Configuration_adv.h
+++ b/Marlin/src/config/examples/gCreate/gMax1.5+/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 #define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  #define PARK_HEAD_ON_PAUSE                  // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  #define PARK_HEAD_ON_PAUSE                  // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/makibox/Configuration_adv.h
+++ b/Marlin/src/config/examples/makibox/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/tvrrug/Round2/Configuration_adv.h
+++ b/Marlin/src/config/examples/tvrrug/Round2/Configuration_adv.h
@ -881,29 +881,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc
--- a/Marlin/src/config/examples/wt150/Configuration_adv.h
+++ b/Marlin/src/config/examples/wt150/Configuration_adv.h
@ -882,29 +882,38 @@
 */
 //#define ADVANCED_PAUSE_FEATURE
 #if ENABLED(ADVANCED_PAUSE_FEATURE)
-  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // Initial retract feedrate in mm/s
-  #define PAUSE_PARK_RETRACT_LENGTH 2         // Initial retract in mm
-                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
-  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                              // Longer length for bowden printers to unload filament from whole bowden tube,
-                                              // shorter length for printers without bowden to unload filament from extruder only,
-                                              // 0 to disable unloading for manual unloading
-  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                              // Short or zero length for printers without bowden where loading is not used
-  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // Extrude filament length in mm after filament is loaded over the hotend,
-                                              // 0 to disable for manual extrusion
-                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                              // or until outcoming filament color is not clear for filament color change
-  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // Turn off nozzle if user doesn't change filament within this time limit in seconds
-  #define FILAMENT_CHANGE_NUMBER_OF_ALERT_BEEPS 5 // Number of alert beeps before printer goes quiet
-  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable to have stepper motors hold position during filament change
-                                              // even if it takes longer than DEFAULT_STEPPER_DEACTIVE_TIME.
-  //#define PARK_HEAD_ON_PAUSE                // Go to filament change position on pause, return to print position on resume
+  #define PAUSE_PARK_RETRACT_FEEDRATE 60      // (mm/s) Initial retract feedrate.
+  #define PAUSE_PARK_RETRACT_LENGTH 2         // (mm) Initial retract.
+                                              // This short retract is done immediately, before parking the nozzle.
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // (mm/s) Unload filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // (mm) The length of filament for a complete unload.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+                                              //   Set to 0 for manual unloading.
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 6     // (mm/s) Load filament feedrate. This can be pretty fast.
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // (mm) Load length of filament, from extruder gear to nozzle.
+                                              //   For Bowden, the full length of the tube and nozzle.
+                                              //   For direct drive, the full length of the nozzle.
+  #define ADVANCED_PAUSE_EXTRUDE_FEEDRATE 3   // (mm/s) Extrude feedrate (after loading). Should be slower than load feedrate.
+  #define ADVANCED_PAUSE_EXTRUDE_LENGTH 50    // (mm) Length to extrude after loading.
+                                              //   Set to 0 for manual extrusion.
+                                              //   Filament can be extruded repeatedly from the Filament Change menu
+                                              //   until extrusion is consistent, and to purge old filament.
+
+                                              // Filament Unload does a Retract, Delay, and Purge first:
+  #define FILAMENT_UNLOAD_RETRACT_LENGTH 13   // (mm) Unload initial retract length.
+  #define FILAMENT_UNLOAD_DELAY 5000          // (ms) Delay for the filament to cool after retract.
+  #define FILAMENT_UNLOAD_PURGE_LENGTH 8      // (mm) An unretract is done, then this length is purged.
+
+  #define PAUSE_PARK_NOZZLE_TIMEOUT 45        // (seconds) Time limit before the nozzle is turned off for safety.
+  #define FILAMENT_CHANGE_ALERT_BEEPS 10      // Number of alert beeps to play when a response is needed.
+  #define PAUSE_PARK_NO_STEPPER_TIMEOUT       // Enable for XYZ steppers to stay powered on during filament change.
+
+  //#define PARK_HEAD_ON_PAUSE                // Park the nozzle during pause and filament change.
  //#define HOME_BEFORE_FILAMENT_CHANGE       // Ensure homing has been completed prior to parking for filament change
+
+  //#define FILAMENT_LOAD_UNLOAD_GCODES       // Add M701/M702 Load/Unload G-codes, plus Load/Unload in the LCD Prepare menu.
+  //#define FILAMENT_UNLOAD_ALL_EXTRUDERS     // Allow M702 to unload all extruders above a minimum target temp (as set by M302)
 #endif

 // @section tmc