define verb PS
	image		"publib:ps"
	parameter	P1, label=INFILE, prompt="File"
			value(required, type=$file)
	parameter	P2, label=OUTFILE, prompt="Outputfile"
			value(type=$file)
	qualifier	BOTTOM_MARGIN,	value(required, type=$number)
			nonnegatable
	qualifier	CALCULATE
			nonnegatable
	qualifier	COLUMNS,	value(required, type=$number)
			nonnegatable
	qualifier	END_PAGE,	value(required,	type=$number)
			nonnegatable
	qualifier	FONT, 		value(required)
			nonnegatable
	qualifier	ITALIC
			nonnegatable
	qualifier	LANDSCAPE
			nonnegatable
	qualifier	LEFT_MARGIN,	value(required, type=$number)
			nonnegatable
	qualifier	LINES,		value(required, type=$number)
			nonnegatable
	qualifier	PORTRAIT
			nonnegatable
	qualifier	SIZE, 		value(required)
			nonnegatable
	qualifier	SPACING,	value(required)
			nonnegatable
	qualifier	START_PAGE,	value(required,	type=$number)
			nonnegatable
	qualifier	TOP_MARGIN,	value(required, type=$number)
			nonnegatable
	qualifier	UNDERLINE
			nonnegatable
	disallow	LANDSCAPE and PORTRAIT
	disallow	ITALIC and UNDERLINE
	disallow	CALCULATE and SIZE
	disallow	CALCULATE and not LINES