MCL's multiple debugging facilities

Macintosh Common Lisp provides many ways for you to examine and debug functions, and source code, and to inspect the state of your Lisp system:

: Documentation commands.
A set of Lisp functions and Fred commands give you access to the source code, documentation strings, and argument lists of functions and other objects.
Introspection commands.
A set of Lisp functions, Fred commands, and menu commands provide information on the state of your Lisp system (such as the amount of room available) and allow you to inspect objects and follow links between objects.
Debugging tools.
A set of tools allow you to monitor functions and single-step through functions, examine stack backtraces, and correct programs and restart from error situations.
: Introspection commands.
A set of Lisp functions, Fred commands, and menu commands provide information on the state of your Lisp system (such as the amount of room available) and allow you to inspect objects and follow links between objects.
Debugging tools.
A set of tools allow you to monitor functions and single-step through functions, examine stack backtraces, and correct programs and restart from error situations.
: Debugging tools.
A set of tools allow you to monitor functions and single-step through functions, examine stack backtraces, and correct programs and restart from error situations.

Gettmg Started with MCL - 19 OCT 1996