The Session Manager module contains the tables and data needed for building the TSO/E user's Session Manager screen layout, PF key definitions, and other items. A copy of the assembler source of ADFMDFLT is in SYS1.SAMPLIB(ADFDFLTX). You can either modify it, reassemble it, and create a new load module for another default environment; or, if you choose, code your own default environment module.

If you want to use one default environment for all your TSO/E users, you can modify ADFMDFLT to refine the environment for your installation's particular requirements. If you find that one environment does not satisfy the requirements of all users, you can create multiple logon procedures, each one specifying a different installation-supplied default environment module.

This section describes the streams that comprise the default environment module, how to modify a default environment, and how to provide multiple default environments. For information about using the Session Manager streams, see .