z80 » Menus
It may be helpful (though I never found a use for this) to know that you can access the TI-OS' own menu structures, found on ROM page 1. These mostly don't help because they consist of Menu Slot Type $03 which is used to execute an asm program. We don't know much about the use of this type so it's really not that much use to us to work with this. You might still want to take a look at ROM page 1, the first part is the pointers and menu structures, then following is the actual menu slot data.
More from z80 » Menus
Creating Menus // Executing Menus // ROM Menus