The menu mode is more indicated when one wants to perform an action which is driven by a menu. Instead of remembering all menu names, it is easier to look at the desired option. A second menu is often presented, and even as third one may appear.
When the end of the action, a triple choice is sometimes presented: continue (y/n/f)?. If the answer is yes the same menu is proposed again. If no is prefered, then the previous menu is presented again, and finally the answer fin made you quit the whole process.
In a cascade of menu, as for example the sequence go, with selection dsc and doc, when entering fin to put an end to the work with the menu, the previous menu appears again. Thus entering fin to the menu "doc" will come back to the calling menu "dsc". fin to "dsc" will finally bring the user back to the starting point "go".