A content management system (CMS) uses an element deletion mechanism to maintain referential integrity of dynamically assembled elements in a repository. Element properties such as probability, popularity and recent usage that are not explicit relationships between parent documents and child elements...http://www.google.com.au/patents/US8027960?utm_source=gb-gplus-sharePatent US8027960 - Intelligent deletion of elements to maintain referential integrity of dynamically assembled components in a content management system