<?xml version="1.0" encoding="utf-8"?>
<PRONOM-Report xmlns="http://pronom.nationalarchives.gov.uk">
  <report_format_detail>
    <FileFormat>
      <FormatID>171</FormatID>
      <FormatName>Windows Metafile Image</FormatName>
      <FormatVersion>
      </FormatVersion>
      <FormatAliases>
      </FormatAliases>
      <FormatFamilies>
      </FormatFamilies>
      <FormatTypes>Image (Vector)</FormatTypes>
      <FormatDisclosure>
      </FormatDisclosure>
      <FormatDescription>Windows Metafile is an image file format originally designed for Microsoft Windows in 1990. Windows Metafiles may contain both vector graphics and bitmap components.</FormatDescription>
      <BinaryFileFormat>Text</BinaryFileFormat>
      <ByteOrders>
      </ByteOrders>
      <ReleaseDate>
      </ReleaseDate>
      <WithdrawnDate>
      </WithdrawnDate>
      <ProvenanceSourceID>1</ProvenanceSourceID>
      <ProvenanceName>Digital Preservation Department / The National Archives</ProvenanceName>
      <ProvenanceSourceDate>02 Aug 2005</ProvenanceSourceDate>
      <ProvenanceDescription>
      </ProvenanceDescription>
      <LastUpdatedDate>16 Mar 2012</LastUpdatedDate>
      <FormatNote>
      </FormatNote>
      <FormatRisk>
      </FormatRisk>
      <TechnicalEnvironment>
      </TechnicalEnvironment>
      <FileFormatIdentifier>
        <Identifier>image/wmf</Identifier>
        <IdentifierType>MIME</IdentifierType>
      </FileFormatIdentifier>
      <FileFormatIdentifier>
        <Identifier>x-fmt/119</Identifier>
        <IdentifierType>PUID</IdentifierType>
      </FileFormatIdentifier>
      <Developers>
        <DeveloperID>93</DeveloperID>
        <DeveloperName>
        </DeveloperName>
        <OrganisationName>Microsoft Corporation</OrganisationName>
        <DeveloperCompoundName>Microsoft Corporation</DeveloperCompoundName>
      </Developers>
      <Support>
        <SupportID>93</SupportID>
        <SupportName>
        </SupportName>
        <OrganisationName>Microsoft Corporation</OrganisationName>
        <SupportCompoundName>Microsoft Corporation</SupportCompoundName>
      </Support>
      <ExternalSignature>
        <ExternalSignatureID>165</ExternalSignatureID>
        <Signature>wmf</Signature>
        <SignatureType>File extension</SignatureType>
      </ExternalSignature>
      <InternalSignature>
        <SignatureID>609</SignatureID>
        <SignatureName>Windows Metafile Image with Placeable File Header</SignatureName>
        <SignatureNote>Many applications that create metafiles prepend a 22-byte 'Placeable File Header' to the metafile: https://msdn.microsoft.com/en-us/library/windows/desktop/ms534075(v=vs.85).aspx

Magic number 0x9AC6CDD7,  2-byte handle, always 0, skip 16 bytes, File type (1 or 2), header size in words, always 9.</SignatureNote>
        <ByteSequence>
          <ByteSequenceID>754</ByteSequenceID>
          <PositionType>Absolute from BOF</PositionType>
          <Offset>0</Offset>
          <MaxOffset>
          </MaxOffset>
          <IndirectOffsetLocation>
          </IndirectOffsetLocation>
          <IndirectOffsetLength>
          </IndirectOffsetLength>
          <Endianness>
          </Endianness>
          <ByteSequenceValue>D7CDC69A0000{16}01000900</ByteSequenceValue>
        </ByteSequence>
      </InternalSignature>
      <InternalSignature>
        <SignatureID>1228</SignatureID>
        <SignatureName>Windows Metafile Image without Placeable File Header</SignatureName>
        <SignatureNote>File type (1 or 2), header size in words, always 9. Version either 01 or 03</SignatureNote>
        <ByteSequence>
          <ByteSequenceID>1499</ByteSequenceID>
          <PositionType>Absolute from BOF</PositionType>
          <Offset>0</Offset>
          <MaxOffset>0</MaxOffset>
          <IndirectOffsetLocation>
          </IndirectOffsetLocation>
          <IndirectOffsetLength>
          </IndirectOffsetLength>
          <Endianness>
          </Endianness>
          <ByteSequenceValue>0100090000(01|03)</ByteSequenceValue>
        </ByteSequence>
      </InternalSignature>
    </FileFormat>
    <SearchCriteria>Criteria</SearchCriteria>
  </report_format_detail>
</PRONOM-Report>
