Enter into a sub-menu.
For example, this is usually a click, the enter button, "A" on Xbox or Nintendo controllers, or "X" on Playstation controllers.
Exit out of a sub-menu.
For example, this is usually the Escape key, "B" on Xbox or Nintendo controllers, or "△" on Playstation controllers.
Navigate to the next section in a menu.
Navigate to the previous section in a menu.
All supported menu navigation bindings. To ignore any, simply don't allow players to bind to them. Any menus that don't have sufficient nestings to support any specific binding simply won't do anything if they're active.