<xs:element name="presentation">
  <xs:annotation>
    <xs:documentation>This is the root element, containing all data of a presentation.</xs:documentation>
  </xs:annotation>
  <xs:complexType>
    <xs:sequence>
      <xs:element name="summary">
        <xs:annotation>
          <xs:documentation>The presentation's summary, as seen in the file's properties</xs:documentation>
        </xs:annotation>
        <xs:complexType>
          <xs:sequence>
            <xs:element name="title" type="xs:string" minOccurs="0"/>
            <xs:element name="subject" type="xs:string" minOccurs="0"/>
            <xs:element name="author" type="xs:string" minOccurs="0"/>
            <xs:element name="lastauthor" type="xs:string" minOccurs="0"/>
            <xs:element name="manager" type="xs:string" minOccurs="0"/>
            <xs:element name="company" type="xs:string" minOccurs="0"/>
            <xs:element name="category" type="xs:string" minOccurs="0"/>
            <xs:element name="template" type="xs:string" minOccurs="0"/>
            <xs:element name="creationtime" type="xs:dateTime" minOccurs="0"/>
            <xs:element name="revision" type="xs:positiveInteger" minOccurs="0"/>
            <xs:element name="keywords" type="xs:string" minOccurs="0"/>
            <xs:element name="comments" type="xs:string" minOccurs="0"/>
            <xs:element name="thumbnail" minOccurs="0">
              <xs:complexType mixed="true">
                <xs:attribute name="format" use="required">
                  <xs:annotation>
                    <xs:documentation>Format is always wmf.</xs:documentation>
                  </xs:annotation>
                  <xs:simpleType>
                    <xs:restriction base="xs:string">
                      <xs:enumeration value="wmf"/>
                    </xs:restriction>
                  </xs:simpleType>
                </xs:attribute>
                <xs:attribute name="encoding" use="required">
                  <xs:annotation>
                    <xs:documentation>At the moment only base64 encoding supported.</xs:documentation>
                  </xs:annotation>
                  <xs:simpleType>
                    <xs:restriction base="xs:string">
                      <xs:enumeration value="base64"/>
                    </xs:restriction>
                  </xs:simpleType>
                </xs:attribute>
              </xs:complexType>
            </xs:element>
          </xs:sequence>
        </xs:complexType>
      </xs:element>
      <xs:element name="pictures" minOccurs="0">
        <xs:annotation>
          <xs:documentation>Contains the presentation's pictures, used for filling shapes or in picture frames.</xs:documentation>
        </xs:annotation>
        <xs:complexType>
          <xs:sequence>
            <xs:element name="picture" type="Picture" minOccurs="0" maxOccurs="unbounded">
              <xs:annotation>
                <xs:documentation>Contains a picture file.</xs:documentation>
              </xs:annotation>
            </xs:element>
          </xs:sequence>
        </xs:complexType>
      </xs:element>
      <xs:element name="bullets" minOccurs="0">
        <xs:annotation>
          <xs:documentation>Contains pictures used as bullets in bullet lists.</xs:documentation>
        </xs:annotation>
        <xs:complexType>
          <xs:sequence>
            <xs:element name="bullet" type="Picture" maxOccurs="unbounded">
              <xs:annotation>
                <xs:documentation>Contains a picture used as bullet in a picture bullet list (picbulletlist).</xs:documentation>
              </xs:annotation>
            </xs:element>
          </xs:sequence>
        </xs:complexType>
      </xs:element>
      <xs:element name="fonts">
        <xs:annotation>
          <xs:documentation>Fonts used in the presentation</xs:documentation>
        </xs:annotation>
        <xs:complexType>
          <xs:sequence>
            <xs:element name="font" maxOccurs="unbounded">
              <xs:complexType>
                <xs:attribute name="id" type="xs:unsignedShort" use="required">
                  <xs:annotation>
                    <xs:documentation>Unique number identifying the font within the presentation.</xs:documentation>
                  </xs:annotation>
                </xs:attribute>
                <xs:attribute name="name" use="required">
                  <xs:annotation>
                    <xs:documentation>Font name.</xs:documentation>
                  </xs:annotation>
                </xs:attribute>
              </xs:complexType>
            </xs:element>
          </xs:sequence>
        </xs:complexType>
      </xs:element>
      <xs:element name="footer" type="Footer">
        <xs:annotation>
          <xs:documentation>Contains global footer properties (date, footer string, slide number). Slides can override these.</xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name="masters">
        <xs:annotation>
          <xs:documentation>Contains all masters of the presentation.</xs:documentation>
        </xs:annotation>
        <xs:complexType>
          <xs:sequence>
            <xs:element name="master" maxOccurs="unbounded">
              <xs:annotation>
                <xs:documentation>Describes a presentation master. Masters contain the default layout and formatting of presentation slides.</xs:documentation>
              </xs:annotation>
              <xs:complexType>
                <xs:sequence>
                  <xs:element name="slidemaster" type="Master">
                    <xs:annotation>
                      <xs:documentation>Contains properties of a slide master. A slide master specifies the default layout and formatting of all slides except the title slide.</xs:documentation>
                    </xs:annotation>
                  </xs:element>
                  <xs:element name="titlemaster" type="Master" minOccurs="0">
                    <xs:annotation>
                      <xs:documentation>Contains properties of a title master, which specifies the default layout and formatting of the title slide.</xs:documentation>
                    </xs:annotation>
                  </xs:element>
                </xs:sequence>
                <xs:attribute name="name">
                  <xs:annotation>
                    <xs:documentation>Name of the master.</xs:documentation>
                  </xs:annotation>
                </xs:attribute>
              </xs:complexType>
            </xs:element>
          </xs:sequence>
        </xs:complexType>
      </xs:element>
      <xs:element name="slides">
        <xs:annotation>
          <xs:documentation>Contains the presentation's slides.</xs:documentation>
        </xs:annotation>
        <xs:complexType>
          <xs:sequence>
            <xs:element name="slide" minOccurs="0" maxOccurs="unbounded">
              <xs:annotation>
                <xs:documentation>This element contains all properties of a presentation slide.</xs:documentation>
              </xs:annotation>
              <xs:complexType>
                <xs:sequence>
                  <xs:element name="background" minOccurs="0">
                    <xs:annotation>
                      <xs:documentation>Describes the background of a slide.</xs:documentation>
                    </xs:annotation>
                    <xs:complexType>
                      <xs:group ref="FillStyleGroup"/>
                    </xs:complexType>
                  </xs:element>
                  <xs:element name="toplevelgroup">
                    <xs:annotation>
                      <xs:documentation>Specifies the top level shape group of the slide.</xs:documentation>
                    </xs:annotation>
                    <xs:complexType>
                      <xs:sequence>
                        <xs:element name="shapes" type="Shapes">
                          <xs:annotation>
                            <xs:documentation>Contains all shapes of the slide.</xs:documentation>
                          </xs:annotation>
                        </xs:element>
                      </xs:sequence>
                    </xs:complexType>
                  </xs:element>
                  <xs:element name="footer" type="Footer" minOccurs="0">
                    <xs:annotation>
                      <xs:documentation>Contains slide footer properties. A slide footer consists of date, footer and slide number placeholders.</xs:documentation>
                    </xs:annotation>
                  </xs:element>
                  <xs:element name="comments" minOccurs="0">
                    <xs:annotation>
                      <xs:documentation>This element contains all comments of the slide.</xs:documentation>
                    </xs:annotation>
                    <xs:complexType>
                      <xs:sequence>
                        <xs:element name="comment" maxOccurs="unbounded">
                          <xs:annotation>
                            <xs:documentation>Specifies the properties of a comment.</xs:documentation>
                          </xs:annotation>
                          <xs:complexType>
                            <xs:sequence>
                              <xs:element name="creationtime" type="xs:dateTime">
                                <xs:annotation>
                                  <xs:documentation>The comment's time stamp.</xs:documentation>
                                </xs:annotation>
                              </xs:element>
                              <xs:element name="author">
                                <xs:annotation>
                                  <xs:documentation>The comment's author.</xs:documentation>
                                </xs:annotation>
                                <xs:complexType>
                                  <xs:attribute name="initials" type="xs:string">
                                    <xs:annotation>
                                      <xs:documentation>The author's initials.</xs:documentation>
                                    </xs:annotation>
                                  </xs:attribute>
                                  <xs:attribute name="name" type="xs:string">
                                    <xs:annotation>
                                      <xs:documentation>The author's name.</xs:documentation>
                                    </xs:annotation>
                                  </xs:attribute>
                                </xs:complexType>
                              </xs:element>
                              <xs:element name="txt" type="xs:string">
                                <xs:annotation>
                                  <xs:documentation>The comment string.</xs:documentation>
                                </xs:annotation>
                              </xs:element>
                            </xs:sequence>
                            <xs:attribute name="counter" type="xs:positiveInteger" use="required">
                              <xs:annotation>
                                <xs:documentation>Comment counter.</xs:documentation>
                              </xs:annotation>
                            </xs:attribute>
                            <xs:attribute name="x" type="xs:integer" use="required">
                              <xs:annotation>
                                <xs:documentation>x coordinate of the comment.</xs:documentation>
                              </xs:annotation>
                            </xs:attribute>
                            <xs:attribute name="y" type="xs:integer" use="required">
                              <xs:annotation>
                                <xs:documentation>y coordinate of the comment.</xs:documentation>
                              </xs:annotation>
                            </xs:attribute>
                          </xs:complexType>
                        </xs:element>
                      </xs:sequence>
                    </xs:complexType>
                  </xs:element>
                  <xs:element name="notes" minOccurs="0">
                    <xs:annotation>
                      <xs:documentation>Element containing the slide's notes.</xs:documentation>
                    </xs:annotation>
                    <xs:complexType>
                      <xs:sequence>
                        <xs:element name="text" type="Text">
                          <xs:annotation>
                            <xs:documentation>The text contained in the slide's notes.</xs:documentation>
                          </xs:annotation>
                        </xs:element>
                      </xs:sequence>
                    </xs:complexType>
                  </xs:element>
                </xs:sequence>
                <xs:attribute name="number" type="xs:unsignedInt" use="required">
                  <xs:annotation>
                    <xs:documentation>Slide number (as it appears in the footer if activated).</xs:documentation>
                  </xs:annotation>
                </xs:attribute>
                <xs:attribute name="master" type="xs:unsignedInt" use="required">
                  <xs:annotation>
                    <xs:documentation>ID of the slide's master.</xs:documentation>
                  </xs:annotation>
                </xs:attribute>
                <xs:attribute name="hidemaster" type="xs:boolean" default="false">
                  <xs:annotation>
                    <xs:documentation>If true, the master's shapes are hidden.</xs:documentation>
                  </xs:annotation>
                </xs:attribute>
                <xs:attribute name="layout" use="required">
                  <xs:annotation>
                    <xs:documentation>Slide layout.</xs:documentation>
                  </xs:annotation>
                  <xs:simpleType>
                    <xs:restriction base="xs:string">
                      <xs:enumeration value="blank"/>
                      <xs:enumeration value="chart"/>
                      <xs:enumeration value="chart+text"/>
                      <xs:enumeration value="clipart+text"/>
                      <xs:enumeration value="clipart+vtext"/>
                      <xs:enumeration value="4objs"/>
                      <xs:enumeration value="largeobj"/>
                      <xs:enumeration value="media+text"/>
                      <xs:enumeration value="obj"/>
                      <xs:enumeration value="obj+text"/>
                      <xs:enumeration value="obj+2objs"/>
                      <xs:enumeration value="objovertext"/>
                      <xs:enumeration value="orgchart"/>
                      <xs:enumeration value="table"/>
                      <xs:enumeration value="text"/>
                      <xs:enumeration value="text+chart"/>
                      <xs:enumeration value="text+clipart"/>
                      <xs:enumeration value="text+media"/>
                      <xs:enumeration value="text+obj"/>
                      <xs:enumeration value="text+2objs"/>
                      <xs:enumeration value="textoverobj"/>
                      <xs:enumeration value="title"/>
                      <xs:enumeration value="headeronly"/>
                      <xs:enumeration value="2columntext"/>
                      <xs:enumeration value="2objs"/>
                      <xs:enumeration value="2objs+obj"/>
                      <xs:enumeration value="2objs+text"/>
                      <xs:enumeration value="2objsovertext"/>
                      <xs:enumeration value="vtext"/>
                      <xs:enumeration value="vheader+vtext"/>
                      <xs:enumeration value="vheader+vtextoverchart"/>
                      <xs:enumeration value="unknown"/>
                    </xs:restriction>
                  </xs:simpleType>
                </xs:attribute>
              </xs:complexType>
            </xs:element>
          </xs:sequence>
        </xs:complexType>
      </xs:element>
    </xs:sequence>
    <xs:attribute name="width" type="xs:unsignedInt" default="5760">
      <xs:annotation>
        <xs:documentation>Slide width (pmu)</xs:documentation>
      </xs:annotation>
    </xs:attribute>
    <xs:attribute name="height" type="xs:unsignedInt" default="4320">
      <xs:annotation>
        <xs:documentation>Slide height (pmu)</xs:documentation>
      </xs:annotation>
    </xs:attribute>
    <xs:attribute name="hidetitlefooter" type="xs:boolean" default="false">
      <xs:annotation>
        <xs:documentation>If true, the footer is hidden on the title slide</xs:documentation>
      </xs:annotation>
    </xs:attribute>
  </xs:complexType>
  <xs:key name="fontKey">
    <xs:annotation>
      <xs:documentation>Assures that the font ID is unique.</xs:documentation>
    </xs:annotation>
    <xs:selector xpath="target:fonts/target:font"/>
    <xs:field xpath="@id"/>
  </xs:key>
  <xs:keyref name="fontRef" refer="fontKey">
    <xs:annotation>
      <xs:documentation>Makes sure that the referenced token font exists.</xs:documentation>
    </xs:annotation>
    <xs:selector xpath=".//target:token"/>
    <xs:field xpath="@font"/>
  </xs:keyref>
  <xs:keyref name="symbolfontRef" refer="fontKey">
    <xs:annotation>
      <xs:documentation>Makes sure that the referenced token symbol font exists.</xs:documentation>
    </xs:annotation>
    <xs:selector xpath=".//target:token"/>
    <xs:field xpath="@symbolfont"/>
  </xs:keyref>
  <xs:keyref name="complexfontRef" refer="fontKey">
    <xs:annotation>
      <xs:documentation>Makes sure that the referenced token complex font exists.</xs:documentation>
    </xs:annotation>
    <xs:selector xpath=".//target:token"/>
    <xs:field xpath="@complexfont"/>
  </xs:keyref>
  <xs:key name="masterKey">
    <xs:annotation>
      <xs:documentation>Assures that the master ID is unique.</xs:documentation>
    </xs:annotation>
    <xs:selector xpath=".//target:slidemaster | .//target:titlemaster"/>
    <xs:field xpath="@id"/>
  </xs:key>
  <xs:keyref name="masterRef" refer="masterKey">
    <xs:annotation>
      <xs:documentation>Makes sure that the referenced master exists.</xs:documentation>
    </xs:annotation>
    <xs:selector xpath=".//target:slide"/>
    <xs:field xpath="@master"/>
  </xs:keyref>
  <xs:key name="pictureKey">
    <xs:annotation>
      <xs:documentation>Makes sure that the picture ID is unique.</xs:documentation>
    </xs:annotation>
    <xs:selector xpath="target:pictures/target:picture"/>
    <xs:field xpath="@id"/>
  </xs:key>
  <xs:keyref name="pictureRef" refer="pictureKey">
    <xs:annotation>
      <xs:documentation>Assures that referenced pictures exist.</xs:documentation>
    </xs:annotation>
    <xs:selector xpath=".//target:pictureframe | .//target:pattern | .//target:texture | .//target:picture"/>
    <xs:field xpath="@picture"/>
  </xs:keyref>
  <xs:key name="bulletKey">
    <xs:annotation>
      <xs:documentation>Enforces the uniqueness of the bullet ID.</xs:documentation>
    </xs:annotation>
    <xs:selector xpath="target:bullets/target:bullet"/>
    <xs:field xpath="@id"/>
  </xs:key>
  <xs:keyref name="bulletRef" refer="bulletKey">
    <xs:annotation>