ge --&gt;
        &lt;!ATTLIST "VerticalPhysicalPixelSpacing" "value" #CDATA #REQUIRED&gt;
          &lt;!-- Data type: Float --&gt;

      &lt;!ELEMENT "HorizontalPosition" EMPTY&gt;
        &lt;!-- The horizontal position, in millimeters, where the image
             should be rendered on media --&gt;
        &lt;!ATTLIST "HorizontalPosition" "value" #CDATA #REQUIRED&gt;
          &lt;!-- Data type: Float --&gt;

      &lt;!ELEMENT "VerticalPosition" EMPTY&gt;
        &lt;!-- The vertical position, in mil