When you create a topicref to a map using the "Create reference" facility in the Map Manager, the dialog automatically sets the @format value to "ditamap", which is, of course, required if you're using a generic topicref. However, if you then replace the generic topicref type with any form of map reference (e.g., <mapref>), the @format value continues to be set and will be set in the instance, even though it's now redundant with the default value set by the topicref element. It would be ideal if the system could detect that @format has the appropriate default value and unset the selection in the dialog so that unnecessary attributes are not set in the map. Cheers, E. -- Eliot Kimber Senior Solutions Architect, RSI Content Solutions "Bringing Strategy, Content, and Technology Together" Main: 512.554.9368 www.rsicms.com www.rsuitecms.com Book: DITA For Practitioners, from XML Press, http://xmlpress.net/publications/dita/practitioners-1/