4. INDIRECT-OPEN (1 byte)

A code of I is used on an Open command to indicate that a secondary table must be opened indirectly by searching a primary table of table names. Otherwise, this parameter should be initialized to blank or LOW-VALUES before the first use of the COMMAND-AREA, and should not be changed. The TABLE field of the COMMAND-AREA must be pre-set to identify the primary table for the indirect open. Once an Open command with the indirect option has been executed, the value I is reset to LOW-VALUES. After a successful Indirect Open operation, the selected secondary table name is placed in the TABLE field of the COMMAND-AREA.

For more information on Open Indirect, see Set Indirect (SI).