setfall

Exit setfall(Exit exit, OverlayPackage overlay, Location fallLocation)
Contexts: computer function, computer program, standard futureprog
Sets or clears the fall destination for an exit overlay. Returns the edited exit or null if the exit/package is null or the package is not editable.
exit: The exit to edit or copy into the supplied overlay package.
overlay: The editable overlay package where the change should be made.
fallLocation: The room characters fall to from this exit; null clears the fall destination.