HP42S VARMENU within MENU Exit button challenge

[Thomas Okken]

That's not possible. The only menu that lets you customize the behavior of EXIT is the "programmable menu," i.e. the one you define with KEY GTO and KEY XEQ and activate with MENU. In all other menus, EXIT takes you to the next higher menu (like, say, going back to the main STAT menu from the CFIT submenu), or from the current regular menu to the current application menu.

(Application menus are SOLVER, ∫f(x), MATRIX, STAT, BASE, and VARMENU; these menus have the property that they stay active even when you select another (non-application) menu, so you'll return to them when you EXIT that other menu.)