Like a table of contents in print material, a computer-presented menu presents information. It informs a user of the topics that are available. Some menus present information by categories and thus communicate the organization as well as the content of the program. In addition to providing information, menus serve as a selection and retrieval mechanism, enabling viewers to select an item and have it automatically retrieved by the program. Commercial computer software packages often have pull-down menus. Categories of options are listed across the top of the display screen in a "menu bar." Static menus present a list of items that occupies the entire display. When a user selects a menu item the screen is erased and a submenu appears on an entirely new display. Selection mechanisms include typing numbers or letters corresponding with the desired choice, and moving the cursor, mouse, or space bar. The success of selection mechanisms depends on the typing skills of the intended users, nature of the task, and available equipment. Menu items may be sequenced in a number of ways depending on the subject matter, frequency of use, importance, and convenience. Words used in the menu should be informative, yet brief, and include titles as well as directions for use. Generally, between four and eight items should be presented on a single menu. (6 references) (DB)