, "document", "text",
"tile", and "transparency".  The format is described by the
following DTD:

<pre>
&lt;!DOCTYPE "javax_imageio_1.0" [

  &lt;!ELEMENT "javax_imageio_1.0" (Chroma?, Compression?, Data?, Dimension?,
    Document?, Text?, Transparency?)&gt;

    &lt;!ELEMENT "Chroma" (ColorSpaceType?, NumChannels?, Gamma?,
      BlackIsZero?, Palette?, BackgroundIndex?, BackgroundColor?)&gt;
      &lt;!-- Chroma (color) information --&gt;

      &lt;!ELEMENT "ColorSpaceType" EMPTY&gt;
        &lt;!-- The r