An object traversing scheme in which the traverse procedure and the traverse rights can be specified flexibly. In this scheme, the object is stored with an assignment of a traverse right for each sub-object indicating who is allowed to traverse each sub-object; at least one traverse IDs for identifying...http://www.google.com.mx/patents/US5574901?utm_source=gb-gplus-sharePatent US5574901 - Method and apparatus for object traversing suitable for structured memory formed by linked objects
