o<prepare> sub
(debug, prepare call_level= #<_call_level> remap_level=#<_remap_level> tool=#<tool> pocket=#<pocket>)

	; show aborting a prepare on tool 2 by returning a negative value
	o<testabort> if [#<tool> EQ 2]
		     o<testabort> return [-1]
	o<testabort> endif

o<prepare> endsub [#<pocket>]
m2