(Preliminary Documentation) Copyright ã1994 by NeXT Computer, Inc.  All Rights Reserved.

Display PostScript Operators

The PostScript Language Reference Manual, by Adobe Systems, Inc., provides the specifications for the standard PostScript and Display PostScript operators.  Listed here are the operators found in OpenStep but not in the standard implementation of the PostScript language.

Compositing Operators

	srcx srcy width height srcgstate destx desty op	composite    -	Composites rectangle in source graphics state with image in current window.

	destxdestywidth height op	compositerectv    -	Composites rectangle of current color and coverage with image in current graphics state.

srcx srcy width height srcgstate destx desty delta 	dissolve    -	Dissolves between area of window referred to by srcgstate and equal area of window referred to by the current graphics state.

Graphics State Operators

	coverage 	setalpha    -	Sets the current coverage.

	- 	currentalpha    coverage	Returns the current coverage setting.