[Variable]
*debug:*
debug-print-level
debug:*debug-print-length*
*print-level* and *print-length* are bound to these
values during the execution of some debug commands. When evaluating
arbitrary expressions in the debugger, the normal values of
*print-level* and *print-length* are in effect. These
variables are initially set to 3 and 5, respectively.
File:/afs/cs.cmu.edu/project/clisp/hackers/ram/docs/cmu-user/compiler.ms