flexi-bot/docs/marlin/_gcode/M000-M001.md

tag	title	brief	author	since	group	codes	notes	parameters	examples
m0000	Unconditional stop	Stop and wait for user	thinkyhead	1.0.0-beta	motion	M0 M1	If both `S` and `P` are included, `S` takes precedence. Without an LCD controller or `EMERGENCY_PARSER` this command is ignored. With `EMERGENCY_PARSER` enabled the [`M108`](/docs/gcode/M108.html) command can be used to continue.	tag optional description values S true Expire time, in seconds tag type sec int tag optional description values P true Expire time, in milliseconds tag type ms int tag optional description string true An optional message to display on the LCD	pre code Stop and wait M0 pre code Display a message, stop, and wait M0 Click to continue

The M0 and M1 commands pause after the last movement and wait for the user to continue. M1 is a deprecated alias for M0.