getorcopyexit

Exit getorcopyexit(Exit exit, OverlayPackage overlay)
Contexts: computer function, computer program, standard futureprog
Gets an editable exit for the specified overlay package, copying the underlying exit when the package needs its own overlay-specific version. Returns null if the exit or package is null.
exit: The existing exit to make editable in the supplied package.
overlay: The overlay package where an editable copy should exist.