The exclGroup object describes a mutual exclusion relationship between a set of containers.An exclusion group is used to cause a set of radio buttons boxes to be mutually exclusive. When a user activates one member of the set, the other members are automatically deactivated. For example, if the set consists of radio buttons, clicking one button causes the other buttons to be deactivated.Each member of the exclusion group is associated with an on value and an off value. When a member is activated, it assumes the on value. When it is deactivated, it assumes the off value. The on value for each member of a particular exclusion group must be unique.Selecting one member of the exclusion group in the form causes each member’s value to be set to its on or off value, as appropriate. Similarly, assigning the on value to a member of the exclusion group causes the other members to be deactivated.Alternatively, a value may be assigned to the exclusion group itself. In this case, each member is activated only if the value matches the on value for that member.
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