buffer (GEOS) in Mapserver 4.6

[Monica Socol]

I have found in the History document for Mapserver version 4.6:
"Finished code to convert back and forth between GEOS geometries. Buffer
and
  convex hull operations are exposed in mapscript"

But this is all I could find. Does this mean that mapscript exposes
Buffer functionality for different types of geometries (not only point)?
Does anyone knows how to use GEOS with mapscript?

Thank you,
Monica

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