<?xml version="1.0" encoding="utf-8"?>
<PRONOM-Report xmlns="http://pronom.nationalarchives.gov.uk">
  <report_format_detail>
    <FileFormat>
      <FormatID>2266</FormatID>
      <FormatName>XLD4 (Graphic Data Document)</FormatName>
      <FormatVersion>
      </FormatVersion>
      <FormatAliases>
      </FormatAliases>
      <FormatFamilies>
      </FormatFamilies>
      <FormatTypes>Image (Raster)</FormatTypes>
      <FormatDisclosure>
      </FormatDisclosure>
      <FormatDescription>XLD4 is a raster graphics format, sometimes known as Q4 file, associated with PC-98 a lineup of 16 and 32 bit computers manufactured by NEC in Japan. Each image consists of two separate files, one with a q4 extension and another with a q4d extension. The q4 file contains the bitmap image and the q4d the text description. In PRONOM these have been given two separate PUIDs.</FormatDescription>
      <BinaryFileFormat>
      </BinaryFileFormat>
      <ByteOrders>
      </ByteOrders>
      <ReleaseDate>
      </ReleaseDate>
      <WithdrawnDate>
      </WithdrawnDate>
      <ProvenanceSourceID>180</ProvenanceSourceID>
      <ProvenanceName>The National Archives and Records Administration / The National Archives and Records Administration</ProvenanceName>
      <ProvenanceSourceDate>13 Oct 2021</ProvenanceSourceDate>
      <ProvenanceDescription>
      </ProvenanceDescription>
      <LastUpdatedDate>13 Oct 2021</LastUpdatedDate>
      <FormatNote>http://fileformats.archiveteam.org/wiki/XLD4</FormatNote>
      <FormatRisk>
      </FormatRisk>
      <TechnicalEnvironment>
      </TechnicalEnvironment>
      <FileFormatIdentifier>
        <Identifier>fmt/1448</Identifier>
        <IdentifierType>PUID</IdentifierType>
      </FileFormatIdentifier>
      <ExternalSignature>
        <ExternalSignatureID>2647</ExternalSignatureID>
        <Signature>q4d</Signature>
        <SignatureType>File extension</SignatureType>
      </ExternalSignature>
      <InternalSignature>
        <SignatureID>1810</SignatureID>
        <SignatureName>XLD4 (Graphic Data Document)</SignatureName>
        <SignatureNote>BOF: Magic bytes ASCII string ‘===============&gt;&gt;&gt;&gt;&gt; XLD4 GRAPHIC DATA DOCUMENT &lt;&lt;&lt;&lt;&lt;===============’</SignatureNote>
        <ByteSequence>
          <ByteSequenceID>2102</ByteSequenceID>
          <PositionType>Absolute from BOF</PositionType>
          <Offset>0</Offset>
          <MaxOffset>0</MaxOffset>
          <IndirectOffsetLocation>
          </IndirectOffsetLocation>
          <IndirectOffsetLength>
          </IndirectOffsetLength>
          <Endianness>
          </Endianness>
          <ByteSequenceValue>3D3D3D3D3D3D3D3D3D3D3D3D3D3D3D3E3E3E3E3E20584C4434204752415048494320444154412020444F43554D454E54203C3C3C3C3C3D3D3D3D3D3D3D3D3D3D3D3D3D3D3D</ByteSequenceValue>
        </ByteSequence>
      </InternalSignature>
    </FileFormat>
    <SearchCriteria>Criteria</SearchCriteria>
  </report_format_detail>
</PRONOM-Report>
