Using AMASPZAP to modify the defaults module

For simplicity, assume that the name of the IBM-supplied default environment module you are using is ADFMDFLT. If you want to modify some of the streams to make them larger or smaller, use AMASPZAP to modify ADFMDFLT. While you can modify the streams using this method, be sure you do not change the logical data structure of the module.

Simply altering ADFMDFLT limits the extent to which you can modify the Session Manager default environment:

You cannot provide different environments for different users this way. Any change you make affects all TSO/E users whose logon procedures load ADFMDFLT.
There is little you can change without changing the data structure of the module. The screen layout and PF key definitions would be difficult to modify.

The following topic describes the changes you can make to the stream definitions using the AMASPZAP service aid.