Release 10.1A: OpenEdge Development:
AppBuilder

> ## Radio button sets

> The radio-set widget provides a way to force a single choice from a small set of possibilities. Unlike a logical set that you might construct using toggle boxes, a radio-button set must always have exactly one member—no more, no fewer—selected. Thus, you cannot use radio button sets when you wish to allow no selection or multiple selection.

> The radio set widget will represent a value of any standard type, including `CHARACTER`. Typically, though, you would use a radio button set for values that are basically nontext-numeric, symbolic-in nature.

> By default, AppBuilder supplies a set of three buttons, arranged vertically. Using the property sheet, you can easily change the orientation to horizontal, and increase or decrease the number of members in the set.

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