lpha" EMPTY&gt;
        &lt;!-- The type of alpha information contained in the image --&gt;
        &lt;!ATTLIST "Alpha" "value" ("none" | "premultiplied" |
          "nonpremultiplied") "none"&gt;

      &lt;!ELEMENT "TransparentIndex" EMPTY&gt;
        &lt;!-- A palette index to be treated as transparent --&gt;
        &lt;!ATTLIST "TransparentIndex" "value" #CDATA #REQUIRED&gt;
          &lt;!-- Data type: Integer --&gt;

      &lt;!ELEMENT "TransparentColor" EMPTY&gt;
        &lt;!-- An RGB color to be 