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      <FormatAliases> </FormatAliases>
      <FormatFamilies> </FormatFamilies>
      <FormatTypes>Text (Mark-up)</FormatTypes>
      <FormatDisclosure> </FormatDisclosure>
      <FormatDescription>Adobe Content Server Message files are used to manage and download digital content, mostly ebooks, via Adobe Digital Editions. The .acsm file is essentially a 'key' to allow the download of purchased content.</FormatDescription>
      <BinaryFileFormat> </BinaryFileFormat>
      <ByteOrders> </ByteOrders>
      <ReleaseDate> </ReleaseDate>
      <WithdrawnDate> </WithdrawnDate>
      <ProvenanceSourceID>184</ProvenanceSourceID>
      <ProvenanceName>British Library / British Library</ProvenanceName>
      <ProvenanceSourceDate>15 Jan 2016</ProvenanceSourceDate>
      <ProvenanceDescription> </ProvenanceDescription>
      <LastUpdatedDate>15 Jan 2016</LastUpdatedDate>
      <FileFormatIdentifier>
        <Identifier>application/vnd.adobe.adept+xml</Identifier>
        <IdentifierType>MIME</IdentifierType>
      </FileFormatIdentifier>
      <FileFormatIdentifier>
        <Identifier>fmt/871</Identifier>
        <IdentifierType>PUID</IdentifierType>
      </FileFormatIdentifier>
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        <ExternalSignatureID> </ExternalSignatureID>
        <Signature>acsm</Signature>
        <SignatureType>File extension</SignatureType>
      </ExternalSignature>
      <InternalSignature>
        <SignatureID>1230</SignatureID>
        <SignatureName>Adobe Content Server Message</SignatureName>
        <SignatureNote>We're seeking a sequence of Mark Up tags:
&lt;fulfillmentToken fulfillmentType {5-64} xmlns="http://ns.adobe.com/adept" {3-64} &lt;distributor {3-128} &lt;operatorURL {3-128} 
&lt;transaction {3-64} &lt;expiration {3-64} &lt;resourceItemInfo {3-512} &lt;metadata {16-2048} &lt;licenseToken</SignatureNote>
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