ALST (Application List Transaction) is used to do multiple session management. It is integrated with user plug-in to enable you to get and show application list.

To use this transaction, you should define it in transactions.desc configuration file and specify DFHALST as its PROGRAM as follows. DFHALST is written in C language; ART for CICS provides it to implement ALST.

ALST;SIMPAPP;Application list transaction;DFHALST

For more information, see Implementing CICS Applications.