(Fred said)
Open your document, then in the toolbar (probably wrong name, its the bar at the top of the evince window) where the 3 window controls are at the right, all the way to the left is a red script "e". click on that, choose "help".
I ran "bash.5[~]: evince Downloads/AAF-0107AO.pdf" form the command line. I don't have an 'e' anywhere in that top bar. See the attached screen-capture.