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    Could anyone share even an old document explaining the .QGS file
    structure?
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    <br>
    An old GIS.SE <a
href="http://gis.stackexchange.com/questions/32340/is-there-a-detailed-description-on-the-qgs-file-structure-somewhere"
      target="_top" rel="nofollow" link="external">thread</a> gave a
    link to <a href="https://github.com/qgis/QGIS/blob/master/qgis.dtd"
      target="_top" rel="nofollow" link="external">qgis.dtd</a> on
    Github.
    <br>
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    This is helpful (though I had to discover what a <a
      href="http://en.wikipedia.org/wiki/Document_type_definition"
      target="_top" rel="nofollow" link="external">DTD actually was</a>)
    but is there no human-readable documentation anywhere out there?
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