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Error Tracing

When coding Lisp programs it is often a great help to trace step by step the operations evaluated by the Lisp Interpreter.

Use the trace function for debugging. Each time a function you specify for tracing for debugging, trace information displays showing the entry of the function and the result of the function.

Use the untrace function to turn tracing of the specified function off.

The *settrace* function provides several modes to view the code interpretation and to localize errors. For example, it is possible to display all evaluated Lisp expressions until an error is recognized by the system.

Related Functions




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