ntg-context - mailing list for ConTeXt users
 help / color / mirror / Atom feed
From: Karl Pettersson via ntg-context <ntg-context@ntg.nl>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Cc: Karl Pettersson <karl.pettersson@klpn.se>
Subject: Re: XMP metadata schema yields invalid PDF/A
Date: Sat, 5 Feb 2022 09:48:16 +0100	[thread overview]
Message-ID: <Yf450DSUa2WAqScs@karl-ThinkPad-P50> (raw)
In-Reply-To: <CAG5iGsBY04sQj=sJoopH5F1ru=Qr-xK5OgzvFNkuhab1D+TU9w@mail.gmail.com>

[-- Attachment #1: Type: text/plain, Size: 3020 bytes --]

On Sat, Feb 05, 2022 at 12:37:44AM +0100, luigi scarso via ntg-context wrote:
> On Fri, Feb 4, 2022 at 11:11 PM Karl Pettersson via ntg-context <
> ntg-context@ntg.nl> wrote:
> 
> > On Fri, Feb 04, 2022 at 10:25:27PM +0100, Hans Hagen via ntg-context wrote:
> > > On 2/4/2022 7:29 PM, Karl Pettersson via ntg-context wrote:
> > > > Hi
> > > >
> > > > PDF/A files generated using ConTeXt fail validation with veraPDF, and
> > > > the reason seems to be that the dc:description metadata is defined with
> > > > the wrong type in the embedded XMP extension schema.
> > > >
> > > >
> > https://tex.stackexchange.com/questions/632380/generate-pdf-a-with-context
> > > >
> > > > https://github.com/veraPDF/veraPDF-library/issues/1224
> > > >
> > > > I can reproduce the problem using TeX Live 2021 (MkIV 2021.03.05). The
> > > > definition seems to be controlled by this code.
> > > >
> > > >
> > https://source.contextgarden.net/tex/context/base/mkiv/lpdf-pua.xml?search=rdf#l81
> > > so "dc:description" is not permitted? it is mentioned in
> > >
> > >
> > https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/elements/1.1/description
> > >
> > > (btw it never failed before)
> >
> > The description element is permitted, but the problem seems to be that
> > its valueType is defined as Text in the embedded schema, while the
> > metadata element in the PDF has an embedded <rdf:Alt><rdf:li
> > xml:lang="x-default"> structure.
> >
> >
> > https://github.com/veraPDF/veraPDF-library/issues/1224#issuecomment-1029932963
> >
> > (I suppose the reference to "title" in the issue comment should be
> > "description".)
> >
> > Validating with veraPDF <1.20 does not raise the error. The validation
> > seems to have changed for redefined types in that version.
> >
> >
> > https://github.com/veraPDF/veraPDF-library/blob/integration/RELEASENOTES.md#validation
> 
> 
> I am missing something here... true
> <dc:description>FOO</dc:description>
> makes a valid pdf 3a with verapdf 1.20.1.
> But dc:description is like dc:title, so where we are redefining
> dc:description as Text ?
> 
> -- 
> luigi

Attach metadata xml for the non-validating and validating example
(extraced with `pdfinfo -meta | xmllint format -`) in the
Github issue.

Here is a reference to the description element. Note that only
description seems to be redefined, not title.

https://source.contextgarden.net/tex/context/base/mkiv/lpdf-pua.xml#l81

> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________


-- 
Karl Pettersson
Uppsala, Sweden

https://static-dust.klpn.se/

[-- Attachment #2: test.xml --]
[-- Type: text/xml, Size: 12572 bytes --]

<?xml version="1.0"?>
<?xpacket begin="" id="W5M0MpCehiHzreSzNTczkc9d"?>
<x:xmpmeta xmlns:x="adobe:ns:meta/">
  <!-- http://www.pdfa.org/wp-content/uploads/2011/08/tn0008_predefined_xmp_properties_in_pdfa-1_2008-03-20.pdf -->
  <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
    <rdf:Description xmlns:dc="http://purl.org/dc/elements/1.1/" rdf:about="">
      <dc:format>application/pdf</dc:format>
      <dc:creator>
        <rdf:Seq>
          <rdf:li xml:lang="x-default">AUTHOR</rdf:li>
        </rdf:Seq>
      </dc:creator>
      <dc:description>
        <rdf:Alt>
          <rdf:li xml:lang="x-default"/>
        </rdf:Alt>
      </dc:description>
      <dc:title>
        <rdf:Alt>
          <rdf:li xml:lang="x-default">TITLE</rdf:li>
        </rdf:Alt>
      </dc:title>
    </rdf:Description>
    <rdf:Description xmlns:pdfx="http://ns.adobe.com/pdfx/1.3/" rdf:about="">
      <pdfx:ID>out | 2022-02-02T21:34:48+01:00</pdfx:ID>
      <pdfx:ConTeXt.Jobname>out</pdfx:ConTeXt.Jobname>
      <pdfx:ConTeXt.Time>2022-02-02 21:34</pdfx:ConTeXt.Time>
      <pdfx:ConTeXt.Url>www.pragma-ade.com</pdfx:ConTeXt.Url>
      <pdfx:ConTeXt.Support>contextgarden.net</pdfx:ConTeXt.Support>
      <pdfx:ConTeXt.Version>2019.03.21 21:39</pdfx:ConTeXt.Version>
      <pdfx:ConTeXt.LMTX/>
      <pdfx:TeX.Support>tug.org</pdfx:TeX.Support>
      <pdfx:LuaTeX.Version>1.10</pdfx:LuaTeX.Version>
      <pdfx:LuaTeX.Functionality>7127</pdfx:LuaTeX.Functionality>
      <pdfx:LuaTeX.LuaVersion>5.3</pdfx:LuaTeX.LuaVersion>
      <pdfx:LuaTeX.Platform>linux-64</pdfx:LuaTeX.Platform>
    </rdf:Description>
    <rdf:Description xmlns:xmp="http://ns.adobe.com/xap/1.0/" rdf:about="">
      <xmp:CreateDate>2022-02-02T21:34:48+01:00</xmp:CreateDate>
      <xmp:CreatorTool>LuaTeX 1.10 7127 + ConTeXt MkIV 2019.03.21 21:39</xmp:CreatorTool>
      <xmp:ModifyDate>2022-02-02T21:34:48+01:00</xmp:ModifyDate>
      <xmp:MetadataDate>2022-02-02T21:34:48+01:00</xmp:MetadataDate>
    </rdf:Description>
    <rdf:Description xmlns:pdf="http://ns.adobe.com/pdf/1.3/" rdf:about="">
      <pdf:Keywords/>
      <pdf:Producer>LuaTeX-1.10</pdf:Producer>
      <pdf:Trapped>False</pdf:Trapped>
    </rdf:Description>
    <rdf:Description xmlns:xmpMM="http://ns.adobe.com/xap/1.0/mm/" rdf:about="">
      <xmpMM:DocumentID>uuid:77baf08a-41c6-87cb-47d0-807f764f5064</xmpMM:DocumentID>
      <xmpMM:InstanceID>uuid:fe6c773e-42b0-864d-4c63-da5c57ec1a40</xmpMM:InstanceID>
    </rdf:Description>
    <rdf:Description xmlns:pdfaExtension="http://www.aiim.org/pdfa/ns/extension/" xmlns:pdfaProperty="http://www.aiim.org/pdfa/ns/property#" xmlns:pdfaSchema="http://www.aiim.org/pdfa/ns/schema#" rdf:about="">
      <pdfaExtension:schemas>
        <rdf:Bag>
          <rdf:li rdf:parseType="Resource">
            <pdfaSchema:namespaceURI>http://ns.adobe.com/pdf/1.3/</pdfaSchema:namespaceURI>
            <pdfaSchema:prefix>pdf</pdfaSchema:prefix>
            <pdfaSchema:schema>Adobe PDF Schema</pdfaSchema:schema>
            <pdfaSchema:property>
              <rdf:Seq>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>internal</pdfaProperty:category>
                  <pdfaProperty:description>A name object indicating whether the document has been modified to include trapping information</pdfaProperty:description>
                  <pdfaProperty:name>Trapped</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
              </rdf:Seq>
            </pdfaSchema:property>
            <pdfaSchema:valueType>
              <rdf:Seq/>
            </pdfaSchema:valueType>
          </rdf:li>
          <rdf:li rdf:parseType="Resource">
            <pdfaSchema:namespaceURI>http://purl.org/dc/elements/1.1/</pdfaSchema:namespaceURI>
            <pdfaSchema:prefix>pdf</pdfaSchema:prefix>
            <pdfaSchema:schema>Dubline Core Schema</pdfaSchema:schema>
            <pdfaSchema:property>
              <rdf:Seq>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>internal</pdfaProperty:category>
                  <pdfaProperty:description>Subject in Document Properties</pdfaProperty:description>
                  <pdfaProperty:name>description</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
              </rdf:Seq>
            </pdfaSchema:property>
            <pdfaSchema:valueType>
              <rdf:Seq/>
            </pdfaSchema:valueType>
          </rdf:li>
          <rdf:li rdf:parseType="Resource">
            <pdfaSchema:namespaceURI>http://ns.adobe.com/pdfx/1.3/</pdfaSchema:namespaceURI>
            <pdfaSchema:prefix>pdfx</pdfaSchema:prefix>
            <pdfaSchema:schema>PDF/X ID Schema</pdfaSchema:schema>
            <pdfaSchema:property>
              <rdf:Seq>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>Name of the ConTeXt job</pdfaProperty:description>
                  <pdfaProperty:name>ConTeXt.Jobname</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>Time stamp of ConTeXt version</pdfaProperty:description>
                  <pdfaProperty:name>ConTeXt.Time</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>ConTeXt website</pdfaProperty:description>
                  <pdfaProperty:name>ConTeXt.Url</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>ConTeXt support</pdfaProperty:description>
                  <pdfaProperty:name>ConTeXt.Support</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>ConTeXt version</pdfaProperty:description>
                  <pdfaProperty:name>ConTeXt.Version</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>ConTeXt LMTX version</pdfaProperty:description>
                  <pdfaProperty:name>ConTeXt.LMTX</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>TeX support</pdfaProperty:description>
                  <pdfaProperty:name>TeX.Support</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>LuaTeX version</pdfaProperty:description>
                  <pdfaProperty:name>LuaTeX.Version</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>LuaTeX functionality</pdfaProperty:description>
                  <pdfaProperty:name>LuaTeX.Functionality</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>LuaTeX Lua version</pdfaProperty:description>
                  <pdfaProperty:name>LuaTeX.LuaVersion</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>LuaTeX platform</pdfaProperty:description>
                  <pdfaProperty:name>LuaTeX.Platform</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>Document identifier</pdfaProperty:description>
                  <pdfaProperty:name>ID</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
              </rdf:Seq>
            </pdfaSchema:property>
            <pdfaSchema:valueType>
              <rdf:Seq/>
            </pdfaSchema:valueType>
          </rdf:li>
          <rdf:li rdf:parseType="Resource">
            <pdfaSchema:namespaceURI>http://ns.adobe.com/xap/1.0/mm/</pdfaSchema:namespaceURI>
            <pdfaSchema:prefix>xmpMM</pdfaSchema:prefix>
            <pdfaSchema:schema>XMP Media Management Schema</pdfaSchema:schema>
            <pdfaSchema:property>
              <rdf:Seq>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>internal</pdfaProperty:category>
                  <pdfaProperty:description>UUID based identifier for specific incarnation of a document</pdfaProperty:description>
                  <pdfaProperty:name>InstanceID</pdfaProperty:name>
                  <pdfaProperty:valueType>URI</pdfaProperty:valueType>
                </rdf:li>
              </rdf:Seq>
            </pdfaSchema:property>
            <pdfaSchema:valueType>
              <rdf:Seq/>
            </pdfaSchema:valueType>
          </rdf:li>
          <rdf:li rdf:parseType="Resource">
            <pdfaSchema:namespaceURI>http://www.aiim.org/pdfa/ns/id/</pdfaSchema:namespaceURI>
            <pdfaSchema:prefix>pdfaid</pdfaSchema:prefix>
            <pdfaSchema:schema>PDF/A ID Schema</pdfaSchema:schema>
            <pdfaSchema:property>
              <rdf:Seq>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>internal</pdfaProperty:category>
                  <pdfaProperty:description>Part of PDF/A standard</pdfaProperty:description>
                  <pdfaProperty:name>part</pdfaProperty:name>
                  <pdfaProperty:valueType>Integer</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>internal</pdfaProperty:category>
                  <pdfaProperty:description>Amendment of PDF/A standard</pdfaProperty:description>
                  <pdfaProperty:name>amd</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>internal</pdfaProperty:category>
                  <pdfaProperty:description>Conformance level of PDF/A standard</pdfaProperty:description>
                  <pdfaProperty:name>conformance</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
              </rdf:Seq>
            </pdfaSchema:property>
            <pdfaSchema:valueType>
              <rdf:Seq/>
            </pdfaSchema:valueType>
          </rdf:li>
        </rdf:Bag>
      </pdfaExtension:schemas>
    </rdf:Description>
    <rdf:Description xmlns:pdfaid="http://www.aiim.org/pdfa/ns/id/" rdf:about="">
      <pdfaid:part>3</pdfaid:part>
      <pdfaid:conformance>A</pdfaid:conformance>
    </rdf:Description>
  </rdf:RDF>
</x:xmpmeta>
<?xpacket end="w"?>

[-- Attachment #3: test-fixed.xml --]
[-- Type: text/xml, Size: 10782 bytes --]

<?xml version="1.0"?>
<?xpacket begin="" id="W5M0MpCehiHzreSzNTczkc9d"?>
<x:xmpmeta xmlns:x="adobe:ns:meta/" x:xmptk="Adobe XMP Core 7.1-c000 79.425dc87, 2021/10/27-16:20:32        ">
  <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
    <rdf:Description xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:pdfx="http://ns.adobe.com/pdfx/1.3/" xmlns:xmp="http://ns.adobe.com/xap/1.0/" xmlns:pdf="http://ns.adobe.com/pdf/1.3/" xmlns:xmpMM="http://ns.adobe.com/xap/1.0/mm/" xmlns:pdfaid="http://www.aiim.org/pdfa/ns/id/" xmlns:pdfaExtension="http://www.aiim.org/pdfa/ns/extension/" xmlns:pdfaSchema="http://www.aiim.org/pdfa/ns/schema#" xmlns:pdfaProperty="http://www.aiim.org/pdfa/ns/property#" rdf:about="">
      <dc:format>application/pdf</dc:format>
      <dc:creator>
        <rdf:Seq>
          <rdf:li xml:lang="x-default">AUTHOR</rdf:li>
        </rdf:Seq>
      </dc:creator>
      <dc:title>
        <rdf:Alt>
          <rdf:li xml:lang="x-default">TITLE</rdf:li>
        </rdf:Alt>
      </dc:title>
      <pdfx:ID>out | 2022-02-02T21:34:48+01:00</pdfx:ID>
      <pdfx:ConTeXt.Jobname>out</pdfx:ConTeXt.Jobname>
      <pdfx:ConTeXt.Time>2022-02-02 21:34</pdfx:ConTeXt.Time>
      <pdfx:ConTeXt.Url>www.pragma-ade.com</pdfx:ConTeXt.Url>
      <pdfx:ConTeXt.Support>contextgarden.net</pdfx:ConTeXt.Support>
      <pdfx:ConTeXt.Version>2019.03.21 21:39</pdfx:ConTeXt.Version>
      <pdfx:ConTeXt.LMTX/>
      <pdfx:TeX.Support>tug.org</pdfx:TeX.Support>
      <pdfx:LuaTeX.Version>1.10</pdfx:LuaTeX.Version>
      <pdfx:LuaTeX.Functionality>7127</pdfx:LuaTeX.Functionality>
      <pdfx:LuaTeX.LuaVersion>5.3</pdfx:LuaTeX.LuaVersion>
      <pdfx:LuaTeX.Platform>linux-64</pdfx:LuaTeX.Platform>
      <xmp:CreateDate>2022-02-02T21:34:48+01:00</xmp:CreateDate>
      <xmp:CreatorTool>LuaTeX 1.10 7127 + ConTeXt MkIV 2019.03.21 21:39</xmp:CreatorTool>
      <xmp:ModifyDate>2022-02-04T15:11:05+03:00</xmp:ModifyDate>
      <xmp:MetadataDate>2022-02-04T15:11:05+03:00</xmp:MetadataDate>
      <pdf:Producer>LuaTeX-1.10</pdf:Producer>
      <pdf:Trapped>Unknown</pdf:Trapped>
      <pdf:Keywords/>
      <xmpMM:DocumentID>uuid:77baf08a-41c6-87cb-47d0-807f764f5064</xmpMM:DocumentID>
      <xmpMM:InstanceID>uuid:00ca627f-3d6c-46bd-8c42-793d2c04eb4d</xmpMM:InstanceID>
      <pdfaid:part>3</pdfaid:part>
      <pdfaid:conformance>A</pdfaid:conformance>
      <pdfaExtension:schemas>
        <rdf:Bag>
          <rdf:li rdf:parseType="Resource">
            <pdfaSchema:namespaceURI>http://ns.adobe.com/pdf/1.3/</pdfaSchema:namespaceURI>
            <pdfaSchema:prefix>pdf</pdfaSchema:prefix>
            <pdfaSchema:schema>Adobe PDF Schema</pdfaSchema:schema>
            <pdfaSchema:property>
              <rdf:Seq>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>internal</pdfaProperty:category>
                  <pdfaProperty:description>A name object indicating whether the document has been modified to include trapping information</pdfaProperty:description>
                  <pdfaProperty:name>Trapped</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
              </rdf:Seq>
            </pdfaSchema:property>
          </rdf:li>
          <rdf:li rdf:parseType="Resource">
            <pdfaSchema:namespaceURI>http://ns.adobe.com/pdfx/1.3/</pdfaSchema:namespaceURI>
            <pdfaSchema:prefix>pdfx</pdfaSchema:prefix>
            <pdfaSchema:schema>PDF/X ID Schema</pdfaSchema:schema>
            <pdfaSchema:property>
              <rdf:Seq>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>Name of the ConTeXt job</pdfaProperty:description>
                  <pdfaProperty:name>ConTeXt.Jobname</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>Time stamp of ConTeXt version</pdfaProperty:description>
                  <pdfaProperty:name>ConTeXt.Time</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>ConTeXt website</pdfaProperty:description>
                  <pdfaProperty:name>ConTeXt.Url</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>ConTeXt support</pdfaProperty:description>
                  <pdfaProperty:name>ConTeXt.Support</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>ConTeXt version</pdfaProperty:description>
                  <pdfaProperty:name>ConTeXt.Version</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>ConTeXt LMTX version</pdfaProperty:description>
                  <pdfaProperty:name>ConTeXt.LMTX</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>TeX support</pdfaProperty:description>
                  <pdfaProperty:name>TeX.Support</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>LuaTeX version</pdfaProperty:description>
                  <pdfaProperty:name>LuaTeX.Version</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>LuaTeX functionality</pdfaProperty:description>
                  <pdfaProperty:name>LuaTeX.Functionality</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>LuaTeX Lua version</pdfaProperty:description>
                  <pdfaProperty:name>LuaTeX.LuaVersion</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>LuaTeX platform</pdfaProperty:description>
                  <pdfaProperty:name>LuaTeX.Platform</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>external</pdfaProperty:category>
                  <pdfaProperty:description>Document identifier</pdfaProperty:description>
                  <pdfaProperty:name>ID</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
              </rdf:Seq>
            </pdfaSchema:property>
          </rdf:li>
          <rdf:li rdf:parseType="Resource">
            <pdfaSchema:namespaceURI>http://ns.adobe.com/xap/1.0/mm/</pdfaSchema:namespaceURI>
            <pdfaSchema:prefix>xmpMM</pdfaSchema:prefix>
            <pdfaSchema:schema>XMP Media Management Schema</pdfaSchema:schema>
            <pdfaSchema:property>
              <rdf:Seq>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>internal</pdfaProperty:category>
                  <pdfaProperty:description>UUID based identifier for specific incarnation of a document</pdfaProperty:description>
                  <pdfaProperty:name>InstanceID</pdfaProperty:name>
                  <pdfaProperty:valueType>URI</pdfaProperty:valueType>
                </rdf:li>
              </rdf:Seq>
            </pdfaSchema:property>
          </rdf:li>
          <rdf:li rdf:parseType="Resource">
            <pdfaSchema:namespaceURI>http://www.aiim.org/pdfa/ns/id/</pdfaSchema:namespaceURI>
            <pdfaSchema:prefix>pdfaid</pdfaSchema:prefix>
            <pdfaSchema:schema>PDF/A ID Schema</pdfaSchema:schema>
            <pdfaSchema:property>
              <rdf:Seq>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>internal</pdfaProperty:category>
                  <pdfaProperty:description>Part of PDF/A standard</pdfaProperty:description>
                  <pdfaProperty:name>part</pdfaProperty:name>
                  <pdfaProperty:valueType>Integer</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>internal</pdfaProperty:category>
                  <pdfaProperty:description>Amendment of PDF/A standard</pdfaProperty:description>
                  <pdfaProperty:name>amd</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
                <rdf:li rdf:parseType="Resource">
                  <pdfaProperty:category>internal</pdfaProperty:category>
                  <pdfaProperty:description>Conformance level of PDF/A standard</pdfaProperty:description>
                  <pdfaProperty:name>conformance</pdfaProperty:name>
                  <pdfaProperty:valueType>Text</pdfaProperty:valueType>
                </rdf:li>
              </rdf:Seq>
            </pdfaSchema:property>
          </rdf:li>
        </rdf:Bag>
      </pdfaExtension:schemas>
    </rdf:Description>
  </rdf:RDF>
</x:xmpmeta>
<?xpacket end="w"?>

[-- Attachment #4: Type: text/plain, Size: 493 bytes --]

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________

  reply	other threads:[~2022-02-05  8:48 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-04 18:29 Karl Pettersson via ntg-context
2022-02-04 21:25 ` Hans Hagen via ntg-context
2022-02-04 21:36   ` luigi scarso via ntg-context
2022-02-04 22:11   ` Karl Pettersson via ntg-context
2022-02-04 23:37     ` luigi scarso via ntg-context
2022-02-05  8:48       ` Karl Pettersson via ntg-context [this message]
2022-02-05  8:59         ` luigi scarso via ntg-context
2022-02-05 12:14           ` Karl Pettersson via ntg-context
2022-02-05 12:28             ` Karl Pettersson via ntg-context
2022-02-05 12:33               ` luigi scarso via ntg-context
2022-02-05 14:18                 ` luigi scarso via ntg-context
2022-02-05 14:29                   ` Karl Pettersson via ntg-context

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=Yf450DSUa2WAqScs@karl-ThinkPad-P50 \
    --to=ntg-context@ntg.nl \
    --cc=karl.pettersson@klpn.se \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).