Parameter 1 contains the name of the function IRXSUBCM is to perform. The functions are:

ADD

Adds an entry to the table using the values specified on the call. IRXSUBCM does not check for duplicate entries. If a duplicate entry is added and then IRXSUBCM is called to delete the entry, IRXSUBCM deletes the duplicate entry and leaves the original one.

DELETE

Deletes the last occurrence of the specified entry from the table.

UPDATE

Updates the specified entry with the new values specified on the call. The entry name itself (the name of the host command environment) is not changed.

QUERY

Returns the values associated with the last occurrence of the entry specified on the call.