Starting Gcode of the extruders

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)

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