What image viewer can display P2D and P2M files?

Hello:

I prefer to see *.p2d and *.p2m images with my own eyes.

This post seemed promising:

FileMagic supposedly can open P2D files

... but I am looking for some free application, or commercial with an evaluation version.

BTW: What is the difference between those 2 file formats? Are both used by SolidWorks?

TIA

SolidworksParts And Features