But the point remains valid that modulation can be done without headers. As much as I hate java, Sun does it very well. They use interfaces, which are like headers to hide implementation. And I don't (even in C and C++) use the headers to figure out how to use something, I use a documentation of it's API, especially when the headers are HUGE.

OpenGL will be my example. I just opened it, it's 3034 lines of code. I'd much rather use the index of my Bluebook to find parameters instead of find it in that mess. The declarations are grouped, but not in any order.

gcc won't allow it but cocoa will allow you to #include a header or the cocao file itself.

Why did Seis get banned?