[visad] mouse wheel clicked

["James Fishbaugh" <jfishbaugh@xxxxxxxxx>]

Hello yet again,

When the mouse wheel is clicked on a 2D plot, the user will be
presented with a display of the value of the x and y axis in the upper
left hand corner.  I would also like it to display the value data
being plotted.  Also, do I have any control of the size and location
of that information.  Thanks.

James