Home » forums » LtU Forum The Origins of APL 1974 talk show style interview with the original developers of APL; complete with plaid jackets and a smoking host. The Origins of APL Video I've never used APL but I found the talk to be very interesting. They talk about how APL come about, its evolution and the character set. Worth watching. Comment viewing options Flat list - collapsed Flat list - expanded Threaded list - collapsed Threaded list - expanded Date - newest first Date - oldest first Select your preferred way to display the comments and click "Save settings" to activate your changes.