Scrolling The Other Window

Trawling through the old Emacs COTWD twitter entries I came across something I didn’t know. In some situations, such as help screens, Emacs will open another window but keep the focus in the current window. When this happens, Emacs will tell you that you can scroll the other window down with C-M-v but it doesn’t tell you how to scroll the other window up. I long ago discovered that you can do that with C-M-- C-M-v but it’s annoying to have to type the two chorded keys. Today’s discovery was that the correct way of doing this is to type C-M-S-v. That’s a lot more convenient because it’s easier to scroll up several pages. Of course, this works no matter what’s in the other window so it can be helpful to quickly check documentation or code in the other window without leaving the window you’re working in.