From: "M. Edward (Ed) Borasky" Date: 2009-03-01T00:25:40+09:00 Subject: Re: Nexus Programming Language In the beginning (1920s / 1930s) there was one notation, with parentheses. We now call that infix, but I don't think it had a name because it was the only notation anybody used. Then Lukaciewicz invented Lukaciewicz notation, which was a prefix notation -- operator followed by operands. Nobody could spell or pronounce his name, so it became known as Polish notation because he was Polish. It was still prefix and not widely used until the early days of programming language. Then came reverse Polish or postfix notation. So now we have three notations: Polish, aka prefix Reverse Polish, aka postfix normal, aka infix -- M. Edward (Ed) Borasky http://www.linkedin.com/in/edborasky I've never met a happy clam. In fact, most of them were pretty steamed.