Well, but he's a physicist not a coder I'm pretty sure he doesn't know anything about the preprocessor. The code is copyrighted but this little snippet is free and clear for "fair use" wherever you'd like. The code is patented so the whole thing is totally "out there" compared to this tiny snapshot.
Project:
Temporarily lost at sea...
Plan:
World domination! Or something...
Temporarily lost at sea...
Plan:
World domination! Or something...