XWIP X Window Interface for Prolog. A package for {Prolog}s following the {Quintus} {foreign function} interface (e.g. {SICStus Prolog}). XWIP provides a (low-level) {Xlib}-style interface to {X}. The current version was developed and tested on SICStus 0.7 and {MIT} {X11} R5 under {SunOS} 4.1.1. It should be adaptable to many other {Unix} configurations. Version 0.6. {(ftp://export.lcs.mit.edu/contrib/xwip-0.6.tar.Z)}. E-mail:. (1993-02-25)