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

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

<xs:element name="indexContributions">
		<xs:complexType mixed="false">
			<xs:sequence>
				<xs:element ref="indexContribution" minOccurs="0"
					maxOccurs="unbounded" />
			</xs:sequence>
		</xs:complexType>
	</xs:element>
	
	
	<xs:element name="indexContribution">
		<xs:complexType mixed="false">
			<xs:sequence>
				<xs:element ref="index" minOccurs="1"	maxOccurs="1" />
			</xs:sequence>
			<xs:attribute name="id" type="xs:string" use="required"/> <!-- attribute for indexContribution -->
			<xs:attribute name="locale" type="xs:string" use="required"/> <!-- attribute for indexContribution -->
		</xs:complexType>
	</xs:element>
	
	<xs:element name="index">
		<xs:complexType mixed="false">
			<xs:sequence>
				<xs:element ref="entry" minOccurs="0" maxOccurs="unbounded" />
			</xs:sequence>
			<xs:attribute name="version" type="xs:string"/> <!-- optional attribute for index -->
		</xs:complexType>
	</xs:element>
	
	<xs:element name="entry">
		<xs:complexType mixed="false">
			<xs:sequence>
				<xs:element ref="topic" minOccurs="0" maxOccurs="unbounded" /> <!-- optional attribute for entry -->
				<xs:element ref="entry" minOccurs="0" maxOccurs="unbounded" /> <!-- optional attribute for entry -->
				<xs:element ref="see" minOccurs="0" maxOccurs="unbounded" /> <!-- optional attribute for entry -->
			</xs:sequence>
			<xs:attribute name="keyword" type="xs:string" use="required"/> <!-- attribute for entry -->
		</xs:complexType>
	</xs:element>
	
	<xs:element name="topic">
		<xs:complexType mixed="false">
			<xs:attribute name="href" type="xs:string" /> <!-- optional attribute for topic -->
			<xs:attribute name="title" type="xs:string" /> <!-- optional attribute for topic -->
			<xs:attribute name="label" type="xs:string" /> <!-- optional attribute for topic -->			
		</xs:complexType>
	</xs:element>
	
	<xs:element name="see">
		<xs:complexType mixed="false">
			<xs:sequence>
				<xs:element ref="subpath" minOccurs="0" maxOccurs="unbounded" />
			</xs:sequence>
			<xs:attribute name="keyword" type="xs:string" use="required"/> <!-- attribute for see -->
		</xs:complexType>
	</xs:element>
	
	<xs:element name="subpath">
		<xs:complexType mixed="false">
			<xs:attribute name="keyword" type="xs:string" use="required"/> <!-- attribute for subpath -->
		</xs:complexType>
	</xs:element>
</xs:schema>