You can test automatic session handling by opening multiple browsers (not multiple tabs or multiple windows of the same browser! Ex: Firefox and Internet Explorer), or by using two separate computers.
By submitting data from the different browsers you can see the session information.
Note: Cookies must be enabled for this website for it to work.

Last submit: {+DATETIME [-FORMAT=MM/DD/YYYY hh:mm:ss.zzz-]+}

{+EXPIREDMESSAGE [-MESSAGE=Your session has expired.-]+}
{+NEWSESSIONMESSAGE [-MESSAGE=A new session started.-]+}

Your session ID is: {+SESSIONID+}
Expires in {+TIMEOUTMINUTES+} minutes unless it is updated.
The file "{+SESSIONFILE+}" stores this session information on the web server.