You can use selection variables (?R, ?A, ?S, ?T, and ?) in any CA IDMS DML or CA IDMS DMLO command where an entity of the type represented by the variable is appropriate.
?R, ?A, ?S, and ?T display selection lists of subschema RECORDS, AREAS, SETS, and SCRATCH AREA ID's respectively. If an item is selected, that item will replace the selection variable in the command. The unqualified selection variable (?) displays a list of items based on context; e.g., if either SET or AREA is allowed by the CA IDMS DML syntax, "?" would cause a list of SETS to be presented first.
If no SET selection is made, a list of AREAS is presented.
Whenever a list is displayed for selection into an CA IDMS DML command, the command line is protected. Selection of an item "unprotects" the command line. To escape the selection process without making a selection, use the INTERRUPT key, or the PF key assigned to the END command.
The entity-specific selection variables (?R, ?A, ?S, and ?T) may also be entered as commands to provide lists of the entities.
For more information about examples of the Record, Area, Sets, and Scratch Display screens., see the General Information.
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