This is documentation for Mathematica 7, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)
Symbolic Execution History
Mathematica can represent not only data and programs, but also the execution history of programs, as symbolic expressions—which can be displayed, manipulated and analyzed using the full power of the Mathematica system.
Trace generate symbolic execution history filtered with various criteria
TracePrint print whenever execution-history criteria are satisfied
TraceDialog enter a dialog whenever execution-history criteria are satisfied
TraceScan apply any function whenever execution-history criteria are satisfied
    
Stack full or filtered symbolic version of the current evaluation stack
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