application question

[tty@REDACTED]

Hello folks,

My application ch3_app.app file has the following definition:

    {included_applications, [modem_app]},
    {applications, [kernel, stdlib, sasl, mnesia, 
                    mnemosyne]},

How do I get sasl, mnesia, mnemosyne and modem_app to start automatically after I do an application:start(ch3_app) ? Is defining them here soley for systools ? 

Thanks

Tee