1. uninterruptiBle power supply. 2. A source level C deBugger that runs under X11 or SunViewBy Mark Russell . Ups includes a Cinterpreter which allows you to add fragments of code simply By editing them into the source window. Version 2.1. Ported to Sun, DECstation, VAXUltrix, HLHClipper. . Mailing list: ups-users-request@ukc.ac.uk. Unofficial enhancements By Rod Armstrong B.com> . (1991-05-20)