<?xml version="1.0" encoding="UTF-8"?>

<xs:schema
  xmlns:xs="http://www.w3.org/2001/XMLSchema"
  xmlns="http://www.w3.org/1998/Math/MathML"
  targetNamespace="http://www.w3.org/1998/Math/MathML"
  elementFormDefault="qualified">

<xs:annotation>
  <xs:documentation>
  This is an XML Schema module defining the "math" element of MathML.
  Author: St&#233;phane Dalmas, INRIA.
  </xs:documentation>
</xs:annotation>

<!-- The four groups that govern a lot of things -->

<!-- currently very lax. Should be tightened from Chapter 5 -->

<xs:group name="Presentation-expr.class">
  <xs:choice>
    <xs:group ref="PresExpr.class"/>
    <xs:group ref="ContExpr.class"/>
  </xs:choice>
</xs:group>

<xs:group name="Content-expr.class">
  <xs:choice>
    <xs:group ref="ContExpr.class"/>
    <xs:group ref="PresExpr.class"/>
  </xs:choice>
</xs:group>

<xs:group name="PresExpr.class">
  <xs:choice>
    <xs:group ref="Presentation-token.class"/>
    <xs:group ref="Presentation-layout.class"/>
    <xs:group ref="Presentation-script.class"/>
    <xs:group ref="Presentation-table.class"/>
    <xs:element ref="mspace"/>
    <xs:element ref="maction"/>
    <xs:element ref="merror"/>
    <xs:element ref="mstyle"/>
  </xs:choice>
</xs:group>

<xs:group name="ContExpr.class">
  <xs:choice>
    <xs:group ref="Content-tokens.class"/>
    <xs:group ref="Content-arith.class"/>
    <xs:group ref="Content-functions.class"/>
    <xs:group ref="Content-logic.class"/>
    <xs:group ref="Content-constants.class"/>
    <xs:group ref="Content-sets.class"/>
    <xs:group ref="Content-relations.class"/>
    <xs:group ref="Content-elementary-functions.class"/>
    <xs:group ref="Content-calculus.class"/>
    <xs:group ref="Content-linear-algebra.class"/>
    <xs:group ref="Content-vector-calculus.class"/>
    <xs:group ref="Content-statistics.class"/>
    <xs:group ref="Content-constructs.class"/>
    <xs:element ref="semantics"/>
  </xs:choice>
</xs:group>

<!-- "math" -->

<xs:attributeGroup name="Browser-interface.attrib">
  <xs:attribute name="baseline" type="xs:string"/>
  <xs:attribute name="overflow" default="scroll">
    <xs:simpleType>
      <xs:restriction base="xs:string">
        <xs:enumeration value="scroll"/>
        <xs:enumeration value="elide"/>
        <xs:enumeration value="truncate"/>
        <xs:enumeration value="scale"/>
      </xs:restriction>
    </xs:simpleType>
  </xs:attribute>
  <xs:attribute name="altimg" type="xs:anyURI"/>
  <xs:attribute name="alttext" type="xs:string"/>
  <xs:attribute name="type" type="xs:string"/>
  <xs:attribute name="name" type="xs:string"/>
  <xs:attribute name="height" type="xs:string"/>
  <xs:attribute name="width" type="xs:string"/>
</xs:attributeGroup>

<xs:attributeGroup name="math.attlist">
  <xs:attributeGroup ref="Browser-interface.attrib"/>
  <xs:attribute name="macros" type="xs:string"/>
<!-- deprecated
  <xs:attribute name="mode" type="xs:string"/>
-->
  <xs:attribute name="display" default="inline">
    <xs:simpleType>
      <xs:restriction base="xs:string">
        <xs:enumeration value="block"/>
        <xs:enumeration value="inline"/>
      </xs:restriction>
    </xs:simpleType>
  </xs:attribute>
  <xs:attributeGroup ref="Common.attrib"/>
</xs:attributeGroup>

<xs:group name="math.content">
  <xs:choice>
    <xs:group ref="PresExpr.class"/>
    <xs:group ref="ContExpr.class"/>
  </xs:choice>
</xs:group>

<xs:complexType name="math.type">
  <xs:group ref="math.content" minOccurs="0" maxOccurs="unbounded"/>
  <xs:attributeGroup ref="math.attlist"/>
</xs:complexType>

<xs:element name="math" type="math.type"/>

</xs:schema>
<!--
  Copyright &#251; 2002 World Wide Web Consortium, (Massachusetts Institute
  of Technology, Institut National de Recherche en Informatique et en
  Automatique, Keio University). All Rights Reserved. See
  http://www.w3.org/Consortium/Legal/.
  -->
