Hi, I've used a digitizer tablet and understand that for a tablet pc with an active screen, a digitizer pen needed. For touchscreen only it was mentioned that screen needed to be actually touched - ok - and also couldn't erase with the end of the pen. But can one erase notes or drawings at all? Or just save and delete? Or does that depend on whether there is drawing or handwriting software that has a separate erase function? Thanks very much for any help.