Xfce4-session is a session manager for Xfce. Its task is to save the state of your desktop (opened applications and their location) and restore it during a next startup. You can create several different sessions and choose one of them on startup.

Preferences
Configure the behaviour of the session manager.

Logout Dialog
The logout dialog and more information about power management handling.

Frequently Asked Question
Tips and tricks related to xfce4-session

Advanced
Advanced information about environment variables and kiosk mode.