canonical, nicely formatted and htmlized, version of this paper is https://www.jsoftware.com/papers/J1990.htm https://www.jsoftware.com/papers/J1990.htm, and as

canonical, nicely formatted and htmlized, version of this paper is https://www.jsoftware.com/papers/J1990.htm https://www.jsoftware.com/papers/J1990.htm, and as should be obvious from url it is simply the first public release of j language; compare language summary with the current vocabulary https://code.jsoftware.com/wiki/NuVoc https://code.jsoftware.com/wiki/NuVoc