Scenario: A user has a computer with a touch screen and is using that to connect to a ThinLinc Server. Inside their ThinLinc session, they want to use a gesture to interact with the desktop, such as a four-finger scroll event to switch virtual desktops (or any similar gesture). Also applicable to external touch pads.
See bug 7111 for gestures that send emulated input. See bug 7251 for gestures that control client-side functions.