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FilledSmallSquareUnprotect[, , ... ] removes the attribute Protected for the symbols .

FilledSmallSquareUnprotect["", "", ... ] unprotects all symbols whose names textually match any of the .

FilledSmallSquare A typical sequence in adding your own rules for built-in functions is Unprotect[f]; definition; Protect[f].

FilledSmallSquare See notes for Protect.

FilledSmallSquare See The Mathematica Book: Section 2.4.12 and Section A.3.12.

FilledSmallSquare See also: Protect, Locked, SetOptions.

Further Examples