As I said in a previous post, I am looking for some way to detect copied code. I have now a working prototype of a "code juicer". From a C file it creates a set of PostScript files (well, almost, as they need postprocessing) which are later processed and selected to print. As an example, here is the output applied to a Runge-Kutta-Fehlberg 4-5.It is something like an execution tree, with function