Short:        J is similar to the language APL, but it uses only ASCII chars
Author:       Iverson Software Inc.
Uploader:     Harald Backert (h backert rz uni-regensburg de)
Type:         dev/lang
Architecture: m68k-amigaos

The FAQ tells us what J is:

1.    What's J?

     J is a functional shareware programming language  
     available via anonymous ftp at watserv1.waterloo.edu.

     Features include list-at-a-time processing, arrays of arrays,
     complex numbers, special features for multiplying polynomials,
     manipulating sets and generating permutations.  Although it
     provides support for numerical modeling, it is not a numerical
     modeling package.  It is a general purpose programming language.

     J was designed and developed by Ken Iverson and Roger Hui.
     It is similar to the language APL, departing from APL in using
     using the ASCII alphabet exclusively, but employing a spelling
     scheme that retains the advantages of the special alphabet 
     required by APL. It has added features and control structures 
     that extend its power beyond standard APL.  

     Although it can be used as a conventional procedural programming 
     language, it can also be used as a pure functional programming 
     language. 

The archive j-6.2.lha contains everything I found in the original
archive of J-6.2.  Since most doc files are PostScript files,
a PostScript printer or viewer is recommended.
Of couse I included Amiga executables, so you don't have to compile J.