XML Upgrade
The HDF XML DTD and tools have been unchanged for several releases.
It is necessary to update the DTD (the grammar) for HDF5-1.6, and there are a number of desired new features.
The document:
"XML Upgrade for h5dump"
http://hdf.ncsa.uiuc.edu/RFC/ARCHIVE/XMLSchema/xml-upgrade-details.pdf
http://hdf.ncsa.uiuc.edu/RFC/ARCHIVE/XMLSchema/xml-upgrade-details.doc
describes the changes to the DTD, the new Schema, and the changes to the h5dump utility.