Access the preference browser from the Tools Menu on the Docking Bar. The help button provides instructions on how to use it. The screen shot shows the menu and the browser after it is opened, along with the help window, a selected preference and its more popup window. If you want to experiment with the settings, use the "save to disk" button first in order to restore the settings later, if necessary.
See also Preferences window 2004 How to lockdown an image for release for examples of setting Preferences programmatically. Preferences cmdGesturesEnabled
