o<change> sub
(debug, change call_level= #<_call_level> remap_level=#<_remap_level>)
(debug, change tool_in_spindle=#<tool_in_spindle> pocket=#<pocket>)

; demonstrate aborting a change on pocket  3 by returning a negative value
	o<testabort> if [#<pocket> EQ 3]
		     o<testabort> return [-1]
	o<testabort> endif

o<change> endsub [1]
m2