Sharing brushing (DISPLAY.SelectRange) across multiple displays

Hi all,

I'm putting together an application where I'd like to create multiple 2D/3D 
scatterplot views of the same data, to include brushing.  Assigning the same 
data refs to the multiple views works great.  Is there an easy way of 
effectively doing the same kind of thing with SelectRangeWidget(s) or something 
else such that "brushing" is automatically reflected in all views?  The VisAD 
documentation for SelectRangeWidget currently says "The DisplayRealType of smap 
... should already be added to a Display" which implies that the standard 
brushing is display-specific.

thanks in advance...  dlf