<xsd:element name="Object" maxOccurs="unbounded">
    <xsd:complexType>
        <xsd:choice>
            <xsd:element name="Delete" />
            <xsd:sequence>
                <xsd:element name="Position">
                    <xsd:complexType>
                        <!-- X and Y coordinates are represented as points. -->
                        <xsd:attribute name="x" type="xsd:decimal" use="required" />
                        <xsd:attribute name="y" type="xsd:decimal" use="required" />
                    </xsd:complexType>
                </xsd:element>
                <xsd:choice>
                    <xsd:element name="Image">
                        <xsd:complexType>
                            <xsd:complexContent>
                                <xsd:extension base="ImageContent">
                                    <xsd:attribute name="backgroundImage" type="xsd:boolean" default="false" />
                                    <!-- Width and Height are also expressed in points. -->
                                    <xsd:attribute name="width" type="PositiveDecimal" />
                                    <xsd:attribute name="height" type="PositiveDecimal" />
                                </xsd:extension>
                            </xsd:complexContent>
                        </xsd:complexType>
                    </xsd:element>
                    <xsd:element name="Ink">
                        <xsd:complexType>
                            <xsd:complexContent>
                                <xsd:extension base="InkContent">
                                    <xsd:attribute name="width" type="PositiveDecimal" />
                                    <xsd:attribute name="height" type="PositiveDecimal" />
                                </xsd:extension>
                            </xsd:complexContent>
                        </xsd:complexType>
                    </xsd:element>
                    <xsd:element name="Outline">
                        <xsd:complexType>
                            <xsd:sequence>
                                <xsd:choice maxOccurs="unbounded">
                                    <xsd:element name="Image">
                                        <xsd:complexType>
                                            <xsd:complexContent>
                                                <xsd:extension base="ImageContent">
                                                    <xsd:attribute name="align">
                                                        <xsd:simpleType>
                                                            <xsd:restriction base="xsd:string">
                                                                <xsd:enumeration value="left" />
                                                                <xsd:enumeration value="center" />
                                                                <xsd:enumeration value="right" />
                                                            </xsd:restriction>
                                                        </xsd:simpleType>
                                                    </xsd:attribute>
                                                </xsd:extension>
                                            </xsd:complexContent>
                                        </xsd:complexType>
                                    </xsd:element>
                                    <xsd:element name="Ink" type="InkContent" />
                                    <xsd:element name="Html" type="HtmlContent" />
                                </xsd:choice>
                            </xsd:sequence>
                            <xsd:attribute name="width" type="PositiveDecimal" />
                        </xsd:complexType>
                    </xsd:element>
                </xsd:choice>
            </xsd:sequence>
        </xsd:choice>
        <xsd:attribute name="guid" type="GUID" use="required" />
    </xsd:complexType>
</xsd:element>