PYT

PYT is the format used by the Pythagoras CAD software, which features pointclouds, webservices, and other buzzwords. It apparently does something geospatial as well. There seems to be a mini-trend in CAD/CAM/3D programs to name them after ancient Greek geometers, as seen in Euclid, another Euclid, and Euklid. It may give you many cheerful facts about the square of the hypotenuse.

Links

 * Official site