NT "BitsPerSample" EMPTY&gt;
        &lt;!-- The number of bits per sample --&gt;
        &lt;!ATTLIST "BitsPerSample" "value" #CDATA #REQUIRED&gt;
          &lt;!-- A list of integers, one per channel --&gt;
          &lt;!-- Data type: List of Integer --&gt;
          &lt;!-- Min length: 1 --&gt;

      &lt;!ELEMENT "SignificantBitsPerSample" EMPTY&gt;
        &lt;!-- The number of significant bits per sample --&gt;
        &lt;!ATTLIST "SignificantBitsPerSample" "value" #CDATA #REQUIRED&gt;
          &lt