omcdgroup2.rng

<?xml version="1.0" encoding="UTF-8"?>
<!-- Schema for OpenMath CD groups -->
<!-- info on the CD group itself -->
<grammar ns="http://www.openmath.org/OpenMathCDG" xmlns="http://relaxng.org/ns/structure/1.0" datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">
  <define name="CDGroupName">
    <element name="CDGroupName">
      <data type="NCName"/>
    </element>
  </define>
  <define name="CDGroupVersion">
    <element name="CDGroupVersion">
      <data type="nonNegativeInteger"/>
    </element>
  </define>
  <define name="CDGroupRevision">
    <element name="CDGroupRevision">
      <data type="nonNegativeInteger"/>
    </element>
  </define>
  <define name="CDGroupURL">
    <element name="CDGroupURL">
      <text/>
    </element>
  </define>
  <define name="CDGroupDescription">
    <element name="CDGroupDescription">
      <text/>
    </element>
  </define>
  <!-- info on the CDs in the group -->
  <define name="CDComment">
    <element name="CDComment">
      <text/>
    </element>
  </define>
  <define name="CDGroupMember">
    <element name="CDGroupMember">
      <optional>
        <ref name="CDComment"/>
      </optional>
      <ref name="CDName"/>
      <optional>
        <ref name="CDVersion"/>
      </optional>
      <optional>
        <ref name="CDURL"/>
      </optional>
    </element>
  </define>
  <define name="CDName">
    <element name="CDName">
      <data type="NCName"/>
    </element>
  </define>
  <define name="CDVersion">
    <element name="CDVersion">
      <data type="nonNegativeInteger"/>
    </element>
  </define>
  <define name="CDURL">
    <element name="CDURL">
      <text/>
    </element>
  </define>
  <!-- structure of the group -->
  <define name="CDGroup">
    <element name="CDGroup">
      <ref name="CDGroupName"/>
      <ref name="CDGroupVersion"/>
      <optional>
        <ref name="CDGroupRevision"/>
      </optional>
      <ref name="CDGroupURL"/>
      <ref name="CDGroupDescription"/>
      <zeroOrMore>
        <choice>
          <ref name="CDGroupMember"/>
          <ref name="CDComment"/>
        </choice>
      </zeroOrMore>
    </element>
  </define>
  <start>
    <ref name="CDGroup"/>
  </start>
</grammar>