-- XSD schema extracted from ITU-T H.761 (11/2014)

<!--
XML Schema for the NCL modules

This is NCL
Copyright: 2005 PUC-RIO/LABORATORIO TELEMIDIA, All Rights Reserved.
See http://www.telemidia.puc-rio.br

Public URI: http://www.ncl.org.br/NCL3.1/modules/NCL31Structure.xsd
Author: TeleMidia Laboratory
Revision: 30/06/2013

Schema for the Structure module namespace,
-->
<schema xmlns="http://www.w3.org/2001/XMLSchema"
  xmlns:structure="http://www.ncl.org.br/NCL3.1/Structure"
  targetNamespace="http://www.ncl.org.br/NCL3.1/Structure"
  elementFormDefault="qualified" attributeFormDefault="unqualified" >
    
  <!-- = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = -->
  <!-- define the top-down structure of an NCL language document.          -->
  <!-- = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = -->

  <complexType name="nclPrototype">
    <sequence>
      <element ref="structure:head" minOccurs="0" maxOccurs="1"/>
      <element ref="structure:body" minOccurs="0" maxOccurs="1"/>
    </sequence>
    <attribute name="id" type="ID" use="required"/>
    <anyAttribute/>
  </complexType>

  <complexType name="headPrototype">
  </complexType>

  <complexType name="bodyPrototype">
    <attribute name="id" type="ID" use="optional"/>
  </complexType>

  <!-- declare global elements in this module -->
  <element name="ncl" type="structure:nclPrototype"/>
  <element name="head" type="structure:headPrototype"/>
  <element name="body" type="structure:bodyPrototype"/>

</schema>