Any app can, provided they build a menu item. Most apps don't, and those that do don't usually connect the presentation of the menu to an action in the app, it

Any app can, provided they build a menu item. Most apps don't, and those that do don't usually connect the presentation of the menu to an action in the app, it just runs alongside the app (e.g. Kaleidoscope). But you could do that if you wanted.