Amount in pixels to pan the surface by when one of the buttons is pressed and released. Defaults to 50.
Optional
panAmount in pixels to adjust pan by each time the timer fires. Defaults to 10.
Optional
panTime in milliseconds between successive adjustment to the pan. Defaults to 60.
Optional
startTime in milliseconds after the mouse button is pressed before panning should start. Defaults to 150.
Options for the pan buttons plugin.