moderated Alt, f10, and shift f10


In another thread there was mention of the f10 key and chrome.  After a bit of exploring, I realize that f10 and the alt key did the same thing.
Realizing f10 moves the keyboard focus to the menu bar, I suddenly realized the similarity with shift + f10 which brings up a context menu where the focus is located.  Are there other neat insights like that for other keys?