<?xml version=“1.0” encoding=“UTF-8”?> <!–

instantiations of this grammar may replace leaf strings
with more elaborated types; e.g. title (text) replaced with
title-main, title-intro, title-part; type replaced with
enum.

some renaming at leaf nodes is permissible

obligations can change both from optional to mandatory,
and from mandatory to optional; optional elements may
be omitted; freely positioned alternatives may be replaced
with strict ordering

DO NOT introduce a namespace here. We do not want a distinct namespace
for these elements, and a distinct namespace for any grammar inheriting
these elements; we just want one namespace for any child grammars
of this.

–> <grammar xmlns=“relaxng.org/ns/structure/1.0” datatypeLibrary=“www.w3.org/2001/XMLSchema-datatypes”>

<include href="reqt.rng"/>
<!-- include "biblio.rnc" { } -->
<include href="basicdoc.rng">
  <start>
    <ref name="standard-document"/>
  </start>
  <define name="BibDataExtensionType">
    <ref name="doctype"/>
    <zeroOrMore>
      <ref name="structuredidentifier"/>
    </zeroOrMore>
  </define>
  <define name="TitleType">
    <text/>
  </define>
  <define name="sections">
    <element name="sections">
      <oneOrMore>
        <choice>
          <ref name="clause"/>
          <ref name="terms"/>
          <ref name="definitions"/>
        </choice>
      </oneOrMore>
    </element>
  </define>
  <define name="references">
    <element name="references">
      <optional>
        <attribute name="id">
          <data type="ID"/>
        </attribute>
      </optional>
      <optional>
        <ref name="section-title"/>
      </optional>
      <zeroOrMore>
        <ref name="BasicBlock"/>
      </zeroOrMore>
      <zeroOrMore>
        <ref name="bibitem"/>
        <zeroOrMore>
          <ref name="note"/>
        </zeroOrMore>
      </zeroOrMore>
    </element>
  </define>
</include>
<define name="standard-document">
  <element name="standard-document">
    <ref name="bibdata"/>
    <optional>
      <ref name="boilerplate"/>
    </optional>
    <optional>
      <ref name="preface"/>
    </optional>
    <ref name="sections"/>
    <zeroOrMore>
      <ref name="annex"/>
    </zeroOrMore>
    <zeroOrMore>
      <ref name="references"/>
    </zeroOrMore>
  </element>
</define>
<define name="preface">
  <element name="preface">
    <oneOrMore>
      <choice>
        <ref name="content"/>
        <ref name="abstract"/>
        <ref name="foreword"/>
        <ref name="introduction"/>
        <ref name="acknowledgements"/>
      </choice>
    </oneOrMore>
  </element>
</define>
<define name="foreword">
  <element name="foreword">
    <ref name="Content-Section"/>
  </element>
</define>
<define name="introduction">
  <element name="introduction">
    <ref name="Content-Section"/>
  </element>
</define>
<define name="boilerplate">
  <element name="boilerplate">
    <optional>
      <ref name="copyright-statement"/>
    </optional>
    <optional>
      <ref name="license-statement"/>
    </optional>
    <optional>
      <ref name="legal-statement"/>
    </optional>
    <optional>
      <ref name="feedback-statement"/>
    </optional>
  </element>
</define>
<define name="copyright-statement">
  <element name="copyright-statement">
    <ref name="Content-Section"/>
  </element>
</define>
<define name="license-statement">
  <element name="license-statement">
    <ref name="Content-Section"/>
  </element>
</define>
<define name="legal-statement">
  <element name="legal-statement">
    <ref name="Content-Section"/>
  </element>
</define>
<define name="feedback-statement">
  <element name="feedback-statement">
    <ref name="Content-Section"/>
  </element>
</define>
<define name="definitions">
  <element name="definitions">
    <optional>
      <attribute name="id">
        <data type="ID"/>
      </attribute>
    </optional>
    <optional>
      <attribute name="language"/>
    </optional>
    <optional>
      <attribute name="script"/>
    </optional>
    <optional>
      <ref name="section-title"/>
    </optional>
    <oneOrMore>
      <zeroOrMore>
        <ref name="BasicBlock"/>
      </zeroOrMore>
      <ref name="dl"/>
    </oneOrMore>
  </element>
</define>
<define name="content">
  <element name="clause">
    <ref name="Content-Section"/>
  </element>
</define>
<define name="abstract">
  <element name="abstract">
    <ref name="Content-Section"/>
  </element>
</define>
<define name="acknowledgements">
  <element name="acknowledgements">
    <ref name="Content-Section"/>
  </element>
</define>
<define name="content-subsection">
  <element name="clause">
    <optional>
      <attribute name="type"/>
    </optional>
    <ref name="Content-Section"/>
  </element>
</define>
<define name="Content-Section">
  <optional>
    <attribute name="id">
      <data type="ID"/>
    </attribute>
  </optional>
  <optional>
    <attribute name="language"/>
  </optional>
  <optional>
    <attribute name="script"/>
  </optional>
  <optional>
    <ref name="section-title"/>
  </optional>
  <choice>
    <group>
      <zeroOrMore>
        <ref name="BasicBlock"/>
      </zeroOrMore>
      <zeroOrMore>
        <ref name="note"/>
      </zeroOrMore>
    </group>
    <oneOrMore>
      <ref name="content-subsection"/>
    </oneOrMore>
  </choice>
</define>
<define name="clause">
  <element name="clause">
    <optional>
      <attribute name="type"/>
    </optional>
    <ref name="Clause-Section"/>
  </element>
</define>
<define name="Clause-Section">
  <optional>
    <attribute name="id">
      <data type="ID"/>
    </attribute>
  </optional>
  <optional>
    <attribute name="language"/>
  </optional>
  <optional>
    <attribute name="script"/>
  </optional>
  <optional>
    <ref name="section-title"/>
  </optional>
  <choice>
    <group>
      <zeroOrMore>
        <ref name="BasicBlock"/>
      </zeroOrMore>
      <zeroOrMore>
        <ref name="note"/>
      </zeroOrMore>
    </group>
    <oneOrMore>
      <choice>
        <ref name="clause-subsection"/>
        <ref name="terms"/>
        <ref name="definitions"/>
      </choice>
    </oneOrMore>
  </choice>
</define>
<define name="clause-subsection">
  <element name="clause">
    <ref name="Clause-Section"/>
  </element>
</define>
<define name="annex">
  <element name="annex">
    <optional>
      <attribute name="id">
        <data type="ID"/>
      </attribute>
    </optional>
    <optional>
      <attribute name="language"/>
    </optional>
    <optional>
      <attribute name="script"/>
    </optional>
    <attribute name="obligation">
      <choice>
        <value>normative</value>
        <value>informative</value>
      </choice>
    </attribute>
    <optional>
      <ref name="section-title"/>
    </optional>
    <choice>
      <group>
        <zeroOrMore>
          <ref name="BasicBlock"/>
        </zeroOrMore>
        <zeroOrMore>
          <ref name="note"/>
        </zeroOrMore>
      </group>
      <oneOrMore>
        <ref name="clause-subsection"/>
      </oneOrMore>
    </choice>
  </element>
</define>
<define name="terms">
  <element name="terms">
    <optional>
      <attribute name="id">
        <data type="ID"/>
      </attribute>
    </optional>
    <optional>
      <attribute name="language"/>
    </optional>
    <optional>
      <attribute name="script"/>
    </optional>
    <zeroOrMore>
      <ref name="BasicBlock"/>
    </zeroOrMore>
    <oneOrMore>
      <ref name="term"/>
    </oneOrMore>
  </element>
</define>
<define name="term">
  <element name="term">
    <optional>
      <attribute name="id">
        <data type="ID"/>
      </attribute>
    </optional>
    <oneOrMore>
      <ref name="preferred"/>
    </oneOrMore>
    <zeroOrMore>
      <ref name="admitted"/>
    </zeroOrMore>
    <zeroOrMore>
      <ref name="related"/>
    </zeroOrMore>
    <zeroOrMore>
      <ref name="deprecates"/>
    </zeroOrMore>
    <optional>
      <ref name="termdomain"/>
    </optional>
    <zeroOrMore>
      <ref name="termgrammar"/>
    </zeroOrMore>
    <ref name="definition"/>
    <zeroOrMore>
      <ref name="termnote"/>
    </zeroOrMore>
    <zeroOrMore>
      <ref name="termexample"/>
    </zeroOrMore>
    <zeroOrMore>
      <ref name="termsource"/>
    </zeroOrMore>
  </element>
</define>
<define name="preferred">
  <element name="preferred">
    <oneOrMore>
      <ref name="TextElement"/>
    </oneOrMore>
  </element>
</define>
<define name="admitted">
  <element name="admitted">
    <oneOrMore>
      <ref name="TextElement"/>
    </oneOrMore>
  </element>
</define>
<define name="related">
  <element name="related">
    <optional>
      <attribute name="type">
        <choice>
          <value>compare</value>
          <value>contrast</value>
          <value>see</value>
        </choice>
      </attribute>
    </optional>
    <oneOrMore>
      <ref name="TextElement"/>
    </oneOrMore>
  </element>
</define>
<define name="deprecates">
  <element name="deprecates">
    <oneOrMore>
      <ref name="TextElement"/>
    </oneOrMore>
  </element>
</define>
<define name="termdomain">
  <element name="domain">
    <oneOrMore>
      <ref name="TextElement"/>
    </oneOrMore>
  </element>
</define>
<define name="termgrammar">
  <element name="grammar">
    <oneOrMore>
      <ref name="TextElement"/>
    </oneOrMore>
  </element>
</define>
<define name="definition">
  <element name="definition">
    <ref name="paragraph"/>
  </element>
</define>
<define name="termnote">
  <element name="termnote">
    <attribute name="id">
      <data type="ID"/>
    </attribute>
    <ref name="paragraph"/>
  </element>
</define>
<define name="termexample">
  <element name="termexample">
    <attribute name="id">
      <data type="ID"/>
    </attribute>
    <ref name="paragraph"/>
  </element>
</define>
<define name="termsource">
  <element name="termsource">
    <attribute name="status">
      <choice>
        <value>identical</value>
        <value>modified</value>
      </choice>
    </attribute>
    <ref name="origin"/>
    <optional>
      <ref name="modification"/>
    </optional>
  </element>
</define>
<define name="origin">
  <element name="origin">
    <ref name="erefType"/>
  </element>
</define>
<define name="modification">
  <element name="modification">
    <ref name="paragraph"/>
  </element>
</define>
<define name="structuredidentifier">
  <element name="structuredidentifier">
    <optional>
      <attribute name="type"/>
    </optional>
    <oneOrMore>
      <element name="agency">
        <text/>
      </element>
    </oneOrMore>
    <optional>
      <element name="class">
        <text/>
      </element>
    </optional>
    <element name="docnumber">
      <text/>
    </element>
    <optional>
      <element name="partnumber">
        <text/>
      </element>
    </optional>
    <optional>
      <element name="edition">
        <text/>
      </element>
    </optional>
    <optional>
      <element name="version">
        <text/>
      </element>
    </optional>
    <optional>
      <element name="supplementtype">
        <text/>
      </element>
    </optional>
    <optional>
      <element name="supplementnumber">
        <text/>
      </element>
    </optional>
    <optional>
      <element name="language">
        <text/>
      </element>
    </optional>
    <optional>
      <element name="year">
        <text/>
      </element>
    </optional>
  </element>
</define>

</grammar>