Menu bars on main stack and different menus on substacks

[william humphrey]

Menubars on main stack and substack
Hi

I know what happens with a menu on the mainstack and none on any of the
substacks but I was wondering how to implement a menu that changes depending
on what stack is opened. If you put a different menubar in a substack does
it happen automatically? Can you put just one menu item in the substack and
get it to add that item to the main menu when that substack is open and then
when you go to a different substack a different item is added?