M125 - Park Head

nozzle Save current position and move to filament change position. PARK_HEAD_ON_PAUSE

Save the current nozzle position and move to the configured park position.

Requires PARK_HEAD_ON_PAUSE.

M125 [L<linear>] [P<bool>] [X<linear>] [Y<linear>] [Z<linear>]

`[L<linear>]`	Retract length (otherwise `FILAMENT_CHANGE_RETRACT_LENGTH`)
`[P<bool>]`	Always show a prompt and await a response (With an LCD menu)
`[X<linear>]`	X position to park at (otherwise `FILAMENT_CHANGE_X_POS`)
`[Y<linear>]`	Y position to park at (otherwise `FILAMENT_CHANGE_Y_POS`)
`[Z<linear>]`	Z raise before park (otherwise `FILAMENT_CHANGE_Z_ADD`)

Retract 2cm of filament and park the nozzle

M125 L20 ; park and retract