Sorry if I'm not explaining this very well, VirtualSite. The code that saved into your Photoshop file is the file format, that tells other readers how to open and view the file. The code doesn't include the actual Photoshop program -- it doesn't let you paint, or draw, or any of that stuff. Your photoshop file is the end result of your work. It is the thing produced by the program, not the program itself. You are sharing your work. The mesh, on the other hand, is the thing itself. Don't know if I'm making sense or not. Consider a literature parallel. Say I write a deeply moving poem about my dog: Harlan The Hairy Is Friendly, Not Scary. and I save it in a Microsoft Word Document. I could have also written it in WordPerfect, or on a post-it note. Whatever. Now, I can sell this (assuming I found a sucker to buy it), because I am not actually selling any Microsoft Word code --it's the content that I'm selling, and it doesn't matter what the file format is. However, if someone else then open my Word document (or even rewrote-it by hand) and changed it to: Herbert The Hairy Is Friendly, Not Scary. It would not be OK for them to sell it, or even distribute it for free, because it contained content that I created. It wouldn't matter what file format it was in (Of course, I'd have to be able to prove that they didn't come up with this on their own, which I probably couldn't, but I hope you can see what I'm getting at). This kind of copyright violation can happen without malicious intent, just as in the case with Amy. I often see stories passed around on usenet attributed to "author unknown" when in reality, the author is quite well known. A lot of Dave Barry's stuff does rounds that way. Usually when the violation is pointed out to the person, they're mortified as they had no intention of doing wrong. I guess to see the difference, try asking "What is being sold (or distributed)?" In your case, it's the contents of the Photoshop file, the artwork you created. Although it is encoded by the Photoshop program, that is not the same as actually containing Photoshop program code. You aren't selling the tools used to create the artwork.