I want to simply click then release the mouse wheel and then be able to scroll up and down, say, a 60 page document at the exact speed I wish, stopping and starting as I wish, simply by then moving the mouse on the mat up and down, no further button pressing required, no further clicking required. This is a standard, indispensably brilliant functionality I use on every single web page I visit, Word document or Email I read, it is only Adobe reader which does not have this basic mouse functionality, other PDF readers all have it as well, so why is it Adobe does not? I am aware of the auto scrolling option in Adobe which incomparably inferior to the above method which is why everything has that really basic functionality I am talking about enabled, except Adobe.