SEND, OPERATOR SEND, and LISTBC initialization exits

You can use the various initialization exits even if you do not use user logs. If you use user logs, you use the initialization exits to initialize the environment for the other SEND, OPERATOR SEND, and LISTBC exits.

You can use an initialization exit to:

Restrict certain users from using a command
Change the operands a user specifies on the command
Restrict certain users from storing messages
Restrict users from sending messages to certain users
Ensure that users receive NOTICES and MAIL when they log on to TSO/E
Prevent users from receiving NOTICES, MAIL, or both when they log on to TSO/E
Change the installation defaults to customize SEND, OPERATOR SEND, and LISTBC processing for individual users

You can use the initialization exits to change the installation defaults in the copy of the SEND PARMLIB control block. By doing this, you can customize the use of user logs and the broadcast data set to store messages.