[zeromeaning]

I recently finally found myself a nice boxed copy of Discworld 1 and 2 for the PC. I noticed however that my boxed copy of Discworld 1 has a ton of GRA files while the version i had downloaded previously was full of SAN files. They are almost the same size, and they have the same filenames before the extension. Searching the web hasn't turned anything up. Is anyone here aware of why there are two different file types?

<edit> - it seems that even though there is a file size difference it was just a difference between the european and US versions. I am still interested however as to if there is any detectable difference. The file size hints that there is more compression in the SCN version, or it's just a more optimized file type....