The Gestures pane of Motion Preferences contains settings pertaining to using a Wacom Intuos graphics tablet to control Motion.
You cannot turn on gestures in Motion unless you have a tablet attached to your computer and Handwriting Recognition is turned on in the Ink preferences in System Preferences. For convenience, you can open Ink Preferences from the Gestures Preferences pane by clicking the Open Ink Preferences button.
For more information on using gestures, see Using Gestures.
Note: Swipes, pinches and other multi-touch gestures performed on a Multi-Touch device are unaffected by any settings in the Gestures pane of Motion Preferences.