You use the START command to activate VTAM®. This command uses some defaults set by the system programmer (as part of the network definition). When you use the START command, you might be required to enter changes or additions to the defaults. If so, your system programmer can tell you what commands to enter.
The defaults for the START command are contained in the configuration list and start list that are defined by the system programmer. The configuration list contains a list of VTAM resources. VTAM uses this list to find out what resources to activate when VTAM is first started. A network can have more than one configuration list; this allows different configurations to be started at start time.
The start list contains VTAM operating system options. For example, it defines how storage is to be used and indicates whether VTAM suppresses or shows messages. The start list also identifies which configuration list is to be used for startup.