MsDesc enhancement

Main objectives
Most important thing to investigate on was whether the module msDesc could be used for non-medieval non-codex manuscript or non-manuscript material or has to be extended. Possible materials include (but are not limited to)
 * printed material
 * text-bearing-object made of something other than parchment (tombstone, statue, bell, curse tablet)

Comment ts: This problem became evidend when I had to tell whether the msDesc is sufficient for a research project which investigates on the transmission of a certain text in print: * They want to express something about "the" (ideal) text. (Work) * Next the different editions of the text have to be compared, the differences have to be recorded. (Manifestation) * The specialities of the exemplar have to be described. (Item) This might apply even to other levels, e.g. scripts, letter-forms etc.
 * If should take into consideration to invent alternative, i.e. parallel, elements with this extended substructure.
 * If we think about printed books, we have to consider the FRBR view on books, i.e. the separation of work, expression, manifestation and item.