This document provides instructions for logging off and shutting down a Windows computer. It explains that logging off closes the active desktop session and returns to the log in screen without shutting down the computer. To log off, users save any open documents, click the Start button, and select "Log off" from the menu. Shutting down turns the computer fully off. To shut down, users save documents, click Start, select "Turn Off Computer," and then select "Turn Off" to power down the system. The document also notes that restarting reboots the operating system while standby or hibernate saves power without fully shutting down.