* Persist channel attributes defined in the stylesheet
* description only if the user value is non null and
* there is no default or the user value
* differs from the default.
*/
if (ssDesc.containsChannelAttribute(pName))
{
String deflt = dssup
.getDefaultChannelAttributeValue(channelId, pName);
if(pValue != null && (deflt == null ||
! pValue.equals(deflt)))