The internal API's of the service include the functionality to scan all sessions in order to identify those that have timed-out (see Service-Session Timeout setting).
When the Sweep All is checked (true/on), all sessions that have timed-out will be stopped or identified for a calling script to act on.
When the Sweep All is not checked (false,off), only sessions that are not actively reserved by a calling process or session will be identified for action.
