In the youtube example of the Danish woman left-hander, that is calssic dab net shots, all hit down with a strong wrist. Notice the wrist snap of her shots, particularly a few forehand ones. Forehand dabs are more difficult than backhand ones to execute with great speed and wrist snap. Tap, I really don't know what it means. It may just be a simple tap at the net.
If Dab is a net kill = tap Ups, then I have properly used the wrong word in the other thread too I thought that "Tap" was taken from English, but maybe it is only Danish then, I apologize. Heong also use tap in one of the early posts in this thread, so I thought it was proper English.