The J programming language, developed in the early 1990s by Kenneth E. Iverson and Roger Hui, is a synthesis of APL (also by Iverson) and the FP and FL function-level languages created by John Backus.
                         
                        
                            Size: 2 MB
                        
                        
                            Authors: www.jsoftware.com
                        
                        
                        
                        Default path: %HOMEDRIVE%\Programs\j
                        
                            pbox install j
                             Show pbox.xml
                        
                        <pbox version="1.0">
    <name>j</name>
    <title>J</title>
    <version>804</version>
    <group>programming</group>
    <group>language</group>
    <archs>32</archs>
    <homedir>%HOMEDRIVE%\Programs\j</homedir>
    <install>
        <copy>.\files</copy>
        <env>J_HOME=${homedir}</env>
    </install>
    <uninstall>
        <remove>${homedir}</remove>
        <unenv>J_HOME</unenv>
    </uninstall>
</pbox>