From Second Life Wiki
|Important: This article has been translated. The translation was imported on 26 Apr 2010. Any changes will require re-export for incremental translation.|
"Joystick" refers to compatible USB input devices, which can be used to control Second Life in exciting ways for exploration, moviemaking, and more. While we've only tested Second Life with certain gadgets such as the 3Dconnexion SpaceNavigator, other joysticks, gamepads, and so on may work, but we can't guarantee it.
This window is fairly technical, although the default settings generally work well with no or minimal changes. Get details on how to use it.