flexi-bot/docs/marlin/_gcode/M208.md

tag	title	brief	author	requires	group	codes	notes	parameters	examples
m0208	Firmware Recover	Firmware-retraction recover settings.	thinkyhead	FWRETRACT	motion	M208	Requires `FWRETRACT`. See related codes [`G10`](/docs/gcode/G010.html), [`G11`](/docs/gcode/G010.html), [`M207`](/docs/gcode/M207.html), and [`M209`](/docs/gcode/M209.html).	tag optional description values S true Additional recover length. Can be negative to reduce recover length. tag type length float tag optional description values W true Additional recover swap length. Can be negative to reduce the length. tag type length float tag optional description values F true Recover feedrate (units/min) tag type feedrate float tag optional description values R true Swap recover feedrate (units/min) tag type feedrate float	pre code Set recover extra length to 0.2mm and recover feedrate to 10mm/s M208 S0.2 F600 pre code Set a retract length of 2mm and *total* recover length of 2.5mm M207 S2.0 ; 2.0mm retract M208 S0.5 ; 2.0mm + 0.5mm recover

Set the added lengths and feedrates for firmware-based retract recovery. The lengths set by M208 are applied in addition to the lengths set by M207 when un-retracting (aka "recovering") the filament. The new values will apply to all subsequent G11 commands.

The "swap" values apply to firmware-based recover moves after a tool-change.