EML

The eml-entity module has a field called "entityType" that is supposed to
contain the type of the entity for "other" entities. The eml-physical file has
a field called "format" that is supposed to contain the name of the data forat
for the physical file. We need to clarify the difference between these fields.

If one is using a mime-type to indicate the format (e.g., image/gif), where
should that go? My guess is eml-physical/format.