I was looking at one of the first compilers of c, written by dmr himself. It was written in the early 1970's, so obviously the syntax is very different. In this file, what does ossiz mean?
ossiz 250;
By the way, is there any helpful article or manual on this sort of thing (older c syntax)?
Just like in B, it's a global variable definition with initialization. In modern C it would be:
int ossiz = 250;