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(Program to test M73 save context/auto-restore context on return)
(M. Haberler)

o1000 sub

o1001 if [#1 GT 0]
      M73 (save context and auto-restore on return and endsub)
o1001 endif

G90 (absolute)
G0 X5 Y20

o1002 if [#2 EQ 1]
o1002	return (trigger auto-restore on return)
o1002 endif

o1005 if [#2 EQ 2]
	M72 (explicitly restore context of this frame)
	M71 (invalidate current frame)
o1005  	return (no triggering of auto-restore-on-return since frame now invalid)
o1005 endif

o1000 endsub (trigger auto-restore on endsub if m73 issued and not invalidated)

G90
G53 G0 X0 Y0 Z0
G91 (relative)
g0 x10 y10
g0 x10 y10
o1000 call [1.0] [0.0]
(back in relative mode due to M73 restore-on-endsub)
(debug, incremental=#<_incremental>)
o1000 call [1.0] [1.0]
(back in relative mode due to M73 restore-on-return)
(debug, incremental=#<_incremental>)

g0 X-5 Y-20
o1000 call [0.0] [0.0]
G91 (relative)
g0 x10 y10
g0 x10 y10
o1000 call [0.0] [0]


(debug, incremental=#<_incremental>)
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