So true. And then there are the too skinny to grab scroll thumbs, which are also invisible without gratuitous scrolling. And they disappear quite quickly. Thr

So true. And then there are the too skinny to grab scroll thumbs, which are also invisible without gratuitous scrolling. And they disappear quite quickly. Three alternate solutions: 1) Long hover (1/4 sec?) near window edge, to make edge grabbier. Long hover (1/4 sec?) near scrolling side for scroll bar to appear. 2) Pressing one of the modifier keys to make edges and scroll bars appear and be grabbable. 3) Toggle keyboard command, that makes edges slightly thicker and holds scroll thumbs visible, vs. hiding them.