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FilledSmallSquare TraceScan[f, expr] applies f to all expressions used in the evaluation of expr.

FilledSmallSquare TraceScan[f, expr, form] includes only those expressions which match form.

FilledSmallSquare TraceScan[f, expr, s] includes all evaluations which use transformation rules associated with the symbol s.

FilledSmallSquare TraceScan[f, expr, form, fp] applies f before evaluation and fp after evaluation to expressions used in the evaluation of expr.

FilledSmallSquare See notes for Trace.

FilledSmallSquare All expressions are wrapped in HoldForm to prevent evaluation before f or fp are applied to them.

FilledSmallSquare The function fp is given as arguments both the form before evaluation and the form after evaluation.

FilledSmallSquare TraceScan[f, expr] returns the result of evaluating expr.

FilledSmallSquare See Section 2.6.11.

FilledSmallSquare New in Version 2.