about.html

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      <p>
        This website summarizes information about <b>hypertext systems</b>.
        The information is mainly queried and visualized from 
        <a href="https://www.wikidata.org/">Wikidata</a>.
      </p>
      <h4>Contributions</h4>
      <p>Contributions and comments are welcome!
        Please directly edit Wikidata to add missing systems,
        people, connections, and pictures! You can also
        leave a comment in this website’s
        <a href="https://github.com/nichtich/hypertext-timeline/issues">issue tracker</a>.
        It includes a list of
        <a href="https://github.com/nichtich/hypertext-timeline/labels/Wikidata">systems missing yet</a>. 
        Appropriate Wikidata properties can be found at
        <a href="https://www.wikidata.org/wiki/Wikidata:WikiProject_Informatics/Software/Properties">WikiProject Software</a>.
      </p>
      <h4>Related projects</h4>
      <p>
        <a href="https://human.iisys.de/hist_HT/">The Historic Hypertext Project</a>
        (<a href="https://twitter.com/hist_HT">@hist_HT</a>),
        coordinated by Claus Atzenbeck, aims at collecting and running historic 
        hypertext systems in virtual machines.
      </p>
      <p>
        <a href="https://wikidp.org/">Wikidata for Digital Preservation</a>
        (<a href="https://twitter.com/wikidigi">@WikiDigi</a>) curates information
        about about the domain of computing (file formats and software, …) in
        Wikidata.
      </p>
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      <h4>An instance of hypertext</h4>
      <p>
        Unlike most hypertexts this website makes explicit use of <b>transclusion</b>,
        the core feature of Ted Nelson's original hypertext design:
      </p>
      <ul>
        <li>
          Diagrams are transcluded with an HTML iframe from
          <a href="https://query.wikidata.org/">Wikidata Query Service</a>.
          Each SPARQL query is kind of an <b>edit decision lists</b>.
        </li>
        <li>
          HTML section (such as the one you are reading) are transcluded via JavaScript
          from individual files.
        </li>
      </ul>
      <p>
        Follow the “sources” links in the right upper corner to the current 
        SPARQL/HTML document. The
        <a href="https://github.com/nichtich/hypertext-timeline">git repository</a>
        further contains versioning information.  
        This is far from perfect but more xanalogical then most other hypertexts.
      </p>
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