(_VL-BALANCE-PARENTHESIS) turns on/off the feature that makes the cursor jump for a split second to the opening parenthesis when typing a closing ditto. This has no effect on the parenthesis matching commands in Edit or the alert about suggesting to match paren's when formatting code. T=on, nil=off.
(_vl-balance-parenthesis nil) => turns off parenthesis flashing
(_vl-balance-parenthesis T) => turns on parenthesis flashing
(_vl-balance-parenthesis T 100000) => turns on parenthesis flashing with delay
(_vl-balance-parenthesis 1 100000) => turns on parenthesis flashing with delay with highlight