flexi-bot/docs/marlin/_gcode/M281.md

tag	title	brief	author	since	requires	group	codes	parameters	example
m0281	Edit Servo Angles	Set servo deploy and/or stow angles	thinkyhead	2.0.0	EDITABLE_SERVO_ANGLES	servos	M281	tag optional description values P false Servo index to update / report. tag type index int tag optional description values L true Deploy angle in degrees. tag type degrees int tag optional description values U true Stow angle in degrees. tag type degrees int	pre code Set 90° deploy and 0° stow angles for servo 0. M281 P0 L90 U0

Set or get the position of a servo. Without L or U the current values will be reported.