Display PostScript Operators

The PostScript Language Reference Manual, Second Edition, by Adobe Systems Incorporated, provides the specifications for standard PostScript and Display PostScript operators. Listed here are 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.

destx desty width height op compositerect -
Composites rectangle of current color and coverage with image in current graphics state.

srcx srcy width height srcgstate destx destydelta 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.