I figured I would do a little sleuthing and see if I could find something in a .gr2 file. I extracted all the textures from the NSS_Uboat7a.gr2 using 3DRipperDX and the Goblin editor. Now I opened up one of the small size .dds files that was extracted in the hex editor, selected the appropriate hex that is the image and tried to search for that 'string' in the .gr2 file. It wasn't found. Now I know that the .gr2 file contains these textures as they were extracted from it. So there must be some kind of compression or something done to them when they are 'packed' into the .gr2 file.
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