Understanding that I am a mechanical guy ... please bear with me ...
HERE is the website to download the program. As I understand it, this is a graphical programming interface that SKIPS the conventional coding and compiler steps and takes you from the graphical interface directly to assembler. I believe when the RC gets it, it is a smaller and more efficient file, and this method eliminates the potential for typos, and syntax and compiling errors.
Paul, if you re-read this thread I think your questions have all been previously answered.
I am sure some of the programmers out there can correct me and elaborate if necessary.