What?! Yes, it’s possible, and it’s really useful!
I’m sure you already had that situation, when searching for something in menus, you knew where it was, but can’t find it! There is one awesome little feature (undocumented one) that allows you to display menus without separators and sorted alphabetically. This feature is available for a long time, starting with InDesign CS.
As you probably already saw on picture, it’s really easy to access this feature. All you have to do is to hold down Ctrl+Alt+Shift (PC) / Option+Command+Shift (Mac) and click on menu. The menu will open, but it will be sorted alphabetically and without separators, like one big list This also works for panel menus and drop-down menus from Control Palette.