[R] Getting rid of "outer box" in cloud()

[Craig Aumann]

I'm using the "cloud()" function to plot some data, but
cloud (and also wireframe) put an external box around the entire plot.
I can't figure out how to get rid of this external box.  How do I turn it
off?

There are cases when you want each plot to be sitting
inside a box (the last example on the cloud() help page, for example), but
I don't want this for what I am doing.

Please cc me with any suggestions.

Thanks!

Craig Aumann
Department of Biology
University of Maryland,
College Park, MD 20742
301-587-4924