G21 G90 G17
(Source basis: LinuxCNC src/emc/rs274ngc/rs274ngc_pre.cc init reads [TRAJ] SPINDLES from INI_FILE_NAME.)
(Source basis: LinuxCNC src/emc/rs274ngc/interp_convert.cc M3/M4 without $ starts only the default spindle.)
S1200 $-1
M3
M4
M30