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FilledSmallSquareMatchLocalNames is an option for Trace and related functions which specifies whether symbols such as x should match symbols with local names of the form x$nnn.

FilledSmallSquare The default setting is MatchLocalNames -> True.

FilledSmallSquare With the default setting, Trace[expr, x = rhs] will show assignments to local variables whose names are of the form x$nnn.

FilledSmallSquareTrace[expr, x = rhs, MatchLocalNames->False] shows assignments only for the global symbol x.

FilledSmallSquare See The Mathematica Book: Section 2.5.10.

Further Examples