"This is a Power Mac compiler for the computer language Kvikkalkul. As you'll see when exploring the documentation there isn't much justification for learning it and it was probably a hoax to begin with, but it exists now no matter what the Swedish government may care. I won't try to justify a language composed of smileys.....
What is kvikkalkul? It appears to be a sort of teletype-based embedded-systems language, supposedly designed in Sweden during the 1950's for submarine computer systems. More likely it's a troll that some hacker with an extremely sick sense of humor cooked up to try and top Intercal as the world's worst computer language, a task at which it succeeds handily."