omcdsig2.rng

<?xml version="1.0" encoding="UTF-8"?>
<!--
  *********************************************
  
  Relax NG Schema for OpenMath CD Signatures
  
  *********************************************
-->
<grammar ns="http://www.openmath.org/OpenMathCDS" xmlns="http://relaxng.org/ns/structure/1.0" datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">
  <include href="openmath2.rng">
    <start>
      <ref name="CDSignatures"/>
    </start>
  </include>
  <define name="CDSComment">
    <element name="CDSComment">
      <text/>
    </element>
  </define>
  <define name="CDSReviewDate">
    <element name="CDSReviewDate">
      <text/>
    </element>
  </define>
  <define name="CDSStatus">
    <element name="CDSStatus">
      <choice>
        <value>official</value>
        <value>experimental</value>
        <value>private</value>
        <value>obsolete</value>
      </choice>
    </element>
  </define>
  <define name="CDSignatures">
    <element name="CDSignatures">
      <ref name="attlist.CDSignatures"/>
      <zeroOrMore>
        <ref name="CDSComment"/>
      </zeroOrMore>
      <interleave>
        <optional>
          <ref name="CDSReviewDate"/>
        </optional>
        <ref name="CDSStatus"/>
      </interleave>
      <zeroOrMore>
        <choice>
          <ref name="CDSComment"/>
          <ref name="Signature"/>
        </choice>
      </zeroOrMore>
    </element>
  </define>
  <define name="attlist.CDSignatures">
    <attribute name="cd">
      <data type="NCName"/>
    </attribute>
    <attribute name="type">
      <data type="NCName"/>
    </attribute>
  </define>
  <define name="Signature">
    <element name="Signature">
      <ref name="attlist.Signature"/>
      <optional>
        <ref name="OMOBJ"/>
      </optional>
    </element>
  </define>
  <define name="attlist.Signature">
    <attribute name="name"/>
  </define>
</grammar>