Help -> Help (or F1) brings up a help manual that is not globally searchable.  I had been told I could use a form of prtscr via gimp that would allow me to take screenshots of menus in other programs, and I wanted to find out how.  The only way to do so, unless I already knew what chapter to look in (and if I did that, I probably would already have known which menu to look under), was to search the table of contents AND each chapter individually until I found it.  This isn't very helpful.