&MAILU

Returns the name of the VTAM APPL being used by MAI as the secondary Logical Unit on the session.

Example: &MAILU

&IF &MAILU = MFMST &THEN &GOTO .MASTER

Note: Whenever MAI starts a session, it opens a VTAM ACB whose name is either chosen from a series or is specified by the user or an MAI exit. &MAILU returns the name of the VTAM ACB used for this session.