APL is using a special character set instead of keywords. For details look at SpecialCharacters.
- [wiki:WikiPedia/APL_programming_language Wikipedia article on APL]
[http://home.earthlink.net/~swsirlin/apl.faq.html Sam Sirlin's APL FAQ]
[http://elliscave.com/APL_J/tool.pdf Notation as a Tool of Thought] K.E. Iverson's 1979 Turing Award lecture (see also ClassicPapers)