Hello, for those who are in a need for search and enumeration capabilities for specialist and racks in ZPatterns-0.3.0 right now like I am, the following could be interesting. Searchable.py defines: CatalogAwareAttributeProvider, CatalogAwareAcquiredAttributeProvider Attribute providers that recatalog the object when its attributes are changed CatalogAwareRack Rack that has a catalog inside it, and index the object created with newItem, and modified afterward. by default, only the id is catalogged. this can be changed in _setup for derived classes CatalogAwareSpecialist Specialist that has support for CatalogAwareRack. A tab 'Contents' provide support for enumerating the objecs in the racks. www/contents can be customized to allow, editing, adding, and/or deleting objects if you like. This, in fact, is a quick hack. remember that all these will be useless when ZPatterns-0.4.0 is out. But I'm fool enough to use evolving software still in infant stage... hope this is useful like it is for me. regards, jephte clain minf7@educ.univ-reunion.fr