Showing TVML Object and OBJ in Croquet

TVML Stage  In TVML, OBJ file format is used for importing 3-D model. It was terrible that there are a lot of incompatible 3-D format in the world. But anyway, for playback TVML contents in Croquet, I have to make OBJ model exporter. Actually, OBJ format was not complicated. I would say it is relatively straightforward and easier than ASE format (ASE in 3dsmax was ugly), thus parsing the format and building objects were not hard job. But what I remain is texture. In OBJ, PIC file format is used to represent image file. OBJ??? I didn't know such format. In the fact, my picture viewer in windowsXP could not show the PIC image. So today's my task is learning what is PIC and building PIC file importer for Squeak.