flexi-bot/docs/marlin/_gcode/M302.md

tag	title	brief	author	requires	group	codes	notes	parameters	examples
m0302	Cold Extrude	Set minimum extrusion temperature, allow cold extrusion.	thinkyhead	PREVENT_COLD_EXTRUSION	thermal	M302	Requires `PREVENT_COLD_EXTRUSION`.	tag optional description values S true Minimum temperature for safe extrusion tag type temp float tag optional description values P true Flag to allow extrusion at any temperature tag type flag bool	pre code Some common uses... M302 ; report current cold extrusion state M302 P0 ; enable cold extrusion checking M302 P1 ; disable cold extrusion checking M302 S0 ; always allow extrusion (disable checking) M302 S170 ; only allow extrusion above 170 M302 S170 P1 ; set min extrude temp to 170 but leave disabled

Set the minimum extrusion temperature, potentially allowing E movement at temperatures below the melting point of the material.