Evince has help in the app menu, and it doesn't have About because the
>
> Nautilus has 4 buttons - 2 menus and 2 presets for views.
> Documents has NONE, just a magnifying glass and a check button...
> Evince has nothing in the app menu, and 2 impossibly unorganized window
> menus - I never know which one to open...
implementation is a modal dialog attached to a specific window. It has a
view menu and a gear menu, and I agree it's not easy to know which
options are in each menu. It's not even obvious that the view menu is
shown by pressing on the button.