Defines the number of milliseconds to wait before
allowing panning to occur again.
autoPanStartOn
Controls whether autopanning is initially toggled
on (set to ``True'') or off (set to ``False'').
NOTE:
Autopanning must also have been enabled (the value
of autoPanStep set to greater than ``0'').
autoPanStep
Defines the percentage of screen width or height to
move when using the pointer to pan. Setting this to ``0''
turns off the autopanning feature.
autoPanModifier
A modifier key to be held down when moving the pointer
to the screen edges in order for autopan to happen.
Possible values are ``Alt'', ``Shift'',
``Meta'', ``Lock'',
``Ctrl'', and ``Mod1''--``Mod5''.