I understand the Alfresco "supports JCR" - this means that it is able to expose it's repository via JCR, but does it go further ? Is it possible to use the Alfresco CMS application layer with a non-alfresco JCR compliant repository ? I am interested in exploring the possibility of swapping out the Alfresco MySQL / Lucene repository layer with a different JCR compliant repository layer. Is this possible ? I am a newbie so apologies for any ignorance on my part, many thanks !