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FilledSmallSquareDelimiterFlashTime is an option for cells and notebooks which specifies how long in seconds a delimiter should flash for when its matching delimiter is entered.

FilledSmallSquareDelimiterFlashTime->0 makes delimiters not flash.

FilledSmallSquare A typical default setting is DelimiterFlashTime->0.3, which makes matching delimiters flash for 0.3 seconds.

FilledSmallSquare Delimiters include parentheses, brackets and braces, as well as [[, ]] and (* and *), and paired special characters such as , .

FilledSmallSquare If you enter an unpaired closing delimiter the standard Mathematica front end will beep.

FilledSmallSquare You can use the front end menu item Check Balance to select ranges with balanced delimiters in an expressions.

FilledSmallSquare You can set DelimiterFlashTime at the level of a single cell, a notebook, or the whole front end.

FilledSmallSquare See The Mathematica Book: Section 2.10.11.

FilledSmallSquare See also: ShowAutoStyles, SyntaxQ, ShowCursorTracker.