Starting Gcode of the extruders

Snapmaker J1
#1

Hi,

When looking in Cura and machine settings at the extruders there’s is a line filled in for start code:

M2000 S200 V250 A6000

Tried searching what it does but M2000 is not a gcode of marlin.

My question is what does this code do? (if I leave this code out the printer does not work like it should)

#2

M2000 is amazing command in J1 firmware for quick switch extruders (park current extruder and move next at the same time)