A displayed list from which a choice can be made. The list of options may
displayed with a single code opposite each. The selection may then be made by
keying the single code. The method provides a simple way of guiding a user
through a complex situation by presenting a sequence of simpler decisions.
Although a visual display and keyboard are frequently used for this purpose,
other arrangements, such as visual displays with touch-sensitive screens or
light pens and arrays of touch-sensitive LEDs, are available.