Commandline tools
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  * `jsondc <jsondc.html>`_ : validates and presents JSON data

  * jsondatadiff: displays the differences, similar to 'diff'

  * jsondatapatch: applies patches, similar to 'patch'

  For help on the command line tools call e.g.:: 

    jsondc --help

  For quick verification of the setup and basic features call:: 

    jsondc --selftest