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      <FormatTypes>Image (Vector)</FormatTypes>
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      <FormatDescription>ASCII DXF format is the ASCII encoded variant of the Drawing Interchange File Format, an exchange format for vector graphics developed by AutoDesk. They are probably the widely-used formats for exchanging vector data, and have become a de-facto industry standard. The format is owned by AutoDesk and typically changes with each release of their AutoCAD family of products. DXF files contain a tagged representation of the vector data. The structure comprises a Header section, followed by sections containing data on Classes, Tables, Blocks, Entities and, optionally, thumbnail images. Each section contains a series of data elements. each preceded by a group code tag, which indicates the type of data element. ASCII DXF version 2004-2006 is the version of the format associated with Releases 2004, 2005 and 2006 of the AutoCAD family of software products.</FormatDescription>
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      <ReleaseDate>01 Mar 2003</ReleaseDate>
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      <ProvenanceName>Digital Preservation Department / The National Archives</ProvenanceName>
      <ProvenanceSourceDate>11 Mar 2005</ProvenanceSourceDate>
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        <RelationshipType>Equivalent to</RelationshipType>
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