You must start all application programs before ESL can communicate with these programs. You can use the start action statement to execute local applications and to start communication with that application, or to start communications with a remote application.

Like other action statements, you can reference the start action statement inside the definition of another action routine or in a response definition.

You can determine the success or failure of a start action statement by testing the value of the errorlevel function. A zero value indicates success; any non-zero value indicates failure.