Execution of a menu implies setting the selection and -if there is a
message to execute-, execute this message. The exact behaviour is
determined by various style parameter:
- equals show_selection_only Select the next item
- == @on Toggle
the graphical
<->selected
attribute of the item on which the event occurred.
- == @off Make
the selection of the menu the item on which the event occurred.
- See also
- menu
->event