Destil said:Software, by the way, wasn't covered in the OGL either.
Not so. From Wizards.com OGL/d20 Software FAQ ( http://www.wizards.com/default.asp?x=d20/oglfaq/20040123i ):
Q: Can the licenses be used with software?
A: Yes, both licenses can be used with software. However, several sections of the licenses require a bit more work to properly implement in software than they do in printed material and the d20 License has restrictions specific to software.