To configure the session management of the GNOME Desktop, use the Sessions preference tool. The Sessions preference tool recognizes the following types of application:
Applications that are session-managed. When you save the settings for your session, the session manager saves all of the session-managed applications. If you log out, then log in again, the session manager automatically starts the session-managed applications.
Applications that are not session-managed. When you save the settings for your session, the session manager does not save any applications that are not session-managed. If you log out, then log in again, the session manager does not start non-session-managed applications. You must start the application manually. Alternatively, you can use the Sessions preference tool to specify non-session-managed applications that you want to automatically start.