[R] newbie rgl (3d interacting plotting) question

[cottrell]

I'm looking for a way to 'reuse' existing rgl device windows.  Right 
now, every time I run my script I have to close the preexisting windows 
and the new windows get assigned ever-increasing numbers.

I know how to do it for regular R plotting device windows but can not 
find a solution for rgl.

thanks

-- 
David Cottrell
http://www.math.mcgill.ca/~cottrell