GEOS integration questions

[listuser HH]

Hello all,

I would like to know how much of the GEOS functions (and which) are 
already available in the MapScript API and in PHP MapScript. I found 
only intersects and cointains for both. The shapeObj in PHP Mapscript 
also has buffer and convexhull.

Can someone tell me what the plans for including more of the GEOS 
functions are?

Are there plans to use some functions (i.e. buffer) directly in the mapfile?

Are there any docs that give some more information?

Regards

Norbert