X Window Interface for Prolog. A package for Prologs following the Quintusforeign 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 MITX11 R5 under SunOS 4.1.1. It should be adaptable to many other Unix configurations. Version 0.6. . E-mail: . (1993-02-25)