Bonjour, I would like to associate descriptive metadata, not with parts of an object (via an attribute in a div of the map), but to versions of it (e.g. metadata for the draft and metadata for the final text ; metadata for the PDF and metadata for the XML edition). In other terms, some of the descriptive metadata should be pointed by the FRBR-work (maximal set of files), some by each FRBR-expression (relevant set of files), and some by each FRBR-manifestation (relevant set of files). But it seems impossible to associate a group of files with a descriptive metadata section. Is there an other method to express this FRBR structure, at least in the simple case that my explanation implies ? Merci Yann