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FilledSmallSquareReleaseHold[expr] removes Hold, HoldForm, HoldPattern and HoldComplete in expr.

FilledSmallSquare Example: ReleaseHold[2, Hold[1 + 1]] LongRightArrow.

FilledSmallSquareReleaseHold removes only one layer of Hold etc.; it does not remove inner occurrences in nested Hold etc. functions.

FilledSmallSquare See The Mathematica Book: Section 2.5.5.

FilledSmallSquare See also: Evaluate.

Further Examples