Universal Debugger udb <tool, parallel> (udb) {KSR}'s interactive {source level debugger} for serial and parallel programs written in {KSR}, {Fortran}, {KSR C} and {KSR1} {assembly language}. Udb is a source level debugger for testing and debugging serial and parallel programs; it is compatible with {GDB} and {dbx}. The user can direct udb either by typing commands or graphically through an {X}-based window interface; the latter provides simultaneous display of source code, I/O and instructions. For parallel programs, operations can be carried out per-{thread}. Home (http://tc.cornell.edu/Parallel.Tools/tools/udb.html). (1995-05-07)