<?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 containing some type definitions for MathML.
Author: St&#233;phane Dalmas, INRIA.
</xs:documentation>

</xs:annotation>

<!– Simple sizes –>

<xs:simpleType name=“simple-size”>

<xs:restriction base="xs:string">
  <xs:enumeration value="small"/>
  <xs:enumeration value="normal"/>
  <xs:enumeration value="big"/>
</xs:restriction>

</xs:simpleType>

<!– Centering values –>

<xs:simpleType name=“centering”>

<xs:restriction base="xs:string">
  <xs:enumeration value="left"/>
  <xs:enumeration value="center"/>
  <xs:enumeration value="right"/>
</xs:restriction>

</xs:simpleType>

<!– The named spaces –>

<!– this is also used in the value of the “width” attribute on the

"mpadded" element -->

<xs:simpleType name=“named-space”>

<xs:restriction base="xs:string">
  <xs:enumeration value="veryverythinmathspace"/>
  <xs:enumeration value="verythinmathspace"/>
  <xs:enumeration value="thinmathspace"/>
  <xs:enumeration value="mediummathspace"/>
  <xs:enumeration value="thickmathspace"/>
  <xs:enumeration value="verythickmathspace"/>
  <xs:enumeration value="veryverythickmathspace"/>
</xs:restriction>

</xs:simpleType>

<!– Thickness –>

<xs:simpleType name=“thickness”>

<xs:restriction base="xs:string">
  <xs:enumeration value="thin"/>
  <xs:enumeration value="medium"/>
  <xs:enumeration value="thick"/>
</xs:restriction>

</xs:simpleType>

<!– number with units used to specified lengths –>

<xs:simpleType name=“length-with-unit”>

<xs:restriction base="xs:string">
  <xs:pattern 
   value="(-?([0-9]+|[0-9]*\.[0-9]+)*(em|ex|px|in|cm|mm|pt|pc|%))|0"/>
 </xs:restriction>

</xs:simpleType>

<xs:simpleType name=“length-with-optional-unit”>

<xs:restriction base="xs:string">
  <xs:pattern 
    value="-?([0-9]+|[0-9]*\.[0-9]+)*(em|ex|px|in|cm|mm|pt|pc|%)?"/>
 </xs:restriction>

</xs:simpleType>

<!– This is just “infinity” that can be used as a length –>

<xs:simpleType name=“infinity”>

<xs:restriction base="xs:string">
  <xs:enumeration value="infinity"/>
</xs:restriction>

</xs:simpleType>

<!– colors defined as RGB –>

<xs:simpleType name=“RGB-color”>

<xs:restriction base="xs:string">
  <xs:pattern value="#(([0-9]|[a-f]){3}|([0-9]|[a-f]){6})"/>
</xs:restriction>

</xs:simpleType>

</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/.
-->