Hello Samuele, > > Is there a general reason for keeping this expansion for everyone? > > Or is it maybe a local CERN patch that could be enclosed in a > > CFG_CERN_SITE or so? > > This was implemented in order to automatically implement nested sets > definition: > > <http://www.openarchives.org/OAI/2.0/guidelines-repository.htm#Sets-Hierarchy>
I didn't know about this nested sets definition, that seems useful. Let us take a second look at our case before deciding what to do. Thanks, Ferran
