[Pen gesture] Double-tap [Mouse action] Double-click [Event messages] ISG_DOUBLETAP sent on second tap (down). ISG_TAP event sent on the first tap. [Mouse messages] WM_LBUTTONDBLCLK sent on second tap (down). WM_LBUTTONDOWN and WM_LBUTTONUP sent on first tap (up) as for a single tap. Select word, open file or folder. [Pen gesture description] 
Tap screen twice in quick succession.