It’s not possible to use the View-Outline submenu from the keyboard while in outline mode. Try it by pressing Alt-V, N… all the items on the submenu are disabled. You have to use the mouse if you want the submenu to work.
It appears to be some sort of focus problem – just tapping Alt, or hitting Alt-V seems to move the focus away from the outline, which disables the submenu. I’m not sure how general a problem this is with the keyboard and menus/submenus; I suspect it may affect other things as well.
The reason I found this problem is that I was trying to work out the keystrokes to access certain outlining functions (like Alt-VNP to go to previous container), because there is no way to set shortcuts for them in the Options dialog. In general, it would be nice if ALL menu options could have shortcuts configured. It’s especially irritating because Scrivener has vast numbers of shortcuts for things I almost never do, but has no way to set shortcuts on things I do a lot more often. For example, I can’t set a shortcut that jumps directly to the top or bottom editor: I can only have one that changes where the focus is.
(That’s another at-times-annoying quirk of the menu and keyboard system: too many Scrivener functions are state-dependent, instead of idempotent. I hate hate hate toggles, because I can’t use them without looking and/or thinking about what to hit. I like to be able to press a key and always go to the right place or switch to the right view, without first needing to notice whether I’m already there… all too often I end up doing the opposite of what I intend, because I don’t expect the keystroke to be a toggle. Mostly this is an annoyance for view modes (Ctrl-1/2/3) and moving between editors, though. My fingers just hit the thing that works most of the time to get me what I want, only sometimes it creates a problem because I was already there, and now I have to toggle again. Being able to set shortcuts to go to a specific editor or to a specific view mode – with NO toggling whatsoever – would be nice.)
(One other menu system quirk: View - Move Focus To - Top Editor is mislabeled: it should actually be labeled “Next Major Element”, as that is what it actually does (as shown in the Options dialog).)