BUILT-IN WOLFRAM LANGUAGE SYMBOL
is an option for Trace and related functions which specifies whether to include later expressions on the evaluation chain that contains the pattern form sought.
- TraceForward->True includes the final expression on the evaluation chain that contains form.
- TraceForward->All includes all expressions after form on the evaluation chain that contains form.
- TraceForward allows you to see the transformations performed on an expression generated during an evaluation.
A recursive definition for finding Fibonacci numbers:
Show only what evaluations of fib are encountered:
Show only the evaluations of fib and the results:
Show all intermediate evaluations between calls of fib and the result: