ABSTRACT

			 A Pie Menu Cookbook

			     Don Hopkins
			University of Maryland

    This paper is about the implementation and construction of Pie
Menus, a human-computer interaction technique of selection from
circular menus, based on cursor direction.
    It describes techniques developed in the implementation of Pie
Menus under the X-Windows, SunView, and NeWS window systems.
    Addressed are issues such as menu and cursor positioning, window
shape and size, graphical layout and design, label positioning,
browsing, mouse-ahead, an efficient tracking algorythm, feedback and
highlighting styles, some interaction techniques which have been
attempted, and some which remain half-baked.