Something missing from the wikipedia article: There used to be a convention among engineering students at the University of Illinois Urbana-Champaign, Illinois

Something missing from the wikipedia article: There used to be a convention among engineering students at the University of Illinois Urbana-Champaign, Illinois to name their student projects "HAL" because it was one letter off from IBM. "HAL Communications" was founded by alumni. Arthur C Clarke claimed he put the "HAL" plant in Illinois only because he had a friend who was a professor there. He also claimed he didn't know about the student connection.