Hello, Yes, the wiki model is that each page (identified by its fullname) can contain one to many objects (or XObjects), instances of a given class (or XClass). An XClass being stored in another page, "object classname" is the fullname of the page that hosts the class. So to uniquely identify an object instance, you need to know in which page it is (page fullname), of which class it's an instance (object classname), and it's number (if there are several objects of same class in the page). You can play with object editor when editing a page, it's easier to get ;) Note that if your purpose is to materialize a one-to-many relation-ship between two objects, another approach is to use property type "DBList" or "DBTreeList". BR, Jeremie 2014-03-12 19:08 GMT+01:00 DeHaynes <ew1560(a)wayne.edu>du>: