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 G33/G33.1 with $ selects active_spindle.)
S500 M3 $1
G0 Z5
G33 Z0 K1 $1
G0 Z5
G33.1 Z0 K1 $1
M30