Would it be useful to add a new FT_FRAMENUM field type (perhaps with some other name), whose value would be a 32-bit unsigned integer, but that would be unlike FT_UINT32 in that, if the field is selected, a menu item (right-button menu item - and also a menu-bar item, probably, as I've seen at least one UI guide recommend that all context-menu items also be available from the menu bar) would be available to go to the frame in question?
