document all of the block and id names
Please add documentation somewhere that explains the different cell, point and block ids. Include the idiosyncrasies for different readers, especially Exodus and CGNS. At least cover cell and point id, globalnodeid/globalelementid, pedegrenodeid/pedegreelementid, ids, blocks (from the files), blocks (internal to ParaView), etc.
This is a Witney bug.