In order to avoid mouse clicks, many actions have been
bound to Alt-Keys. The key assignment can be found in the help
topic of the widget, in the pop-up menus, e.g.: Postscript Atl-p
or on the action button itself. If a letter is
underlined, like in 'Exit', the letter can be used
with the Alt key to trigger the action that is associated
with the button.
All Widgets can be closed with Alt-x.