Logical data has only two values, one to represent True and another to represent False. Logical data is usually stored in a character field, in a form such as T/F, Y/N or On/Off. Sometimes it is stored in a numeric or a character field where zero denotes False and any other value denotes True. Analyzer recognizes most logical data automatically.
Note: When a logical data or computed field is defined , it is automatically given the "Hidden" field attribute and is not displayed in field selection lists for commands but will appear in the filter list within the Expression Builder. To change the "Hidden" field attribute simply edit the field, click the Advanced button and then un-check the "Hidden" field attribute.