Some months back I read, somewhere on the web, an encyclopedia article on APL written by Ken Iverson. In it he described four main principles that had been kept in mind through its development. I haven't found that piece listed in "A Bibliography of APL and J" on the J wiki, or at least I haven't confidently identified it. Perhaps I'm thinking of "The Design of APL"?
If somebody can help me know which work I am trying to rediscover, I'll appreciate the guidance. My intent is to expand that list by identifying a few similar guiding concepts that applied as development effort turned to J. These would underscore why rank and verb trains are features, to note the most prominent examples. Tracy ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
