A system, method and computer program are provided for user navigation within a virtual reality three-dimensional workspace containing functional three-dimensional objects. The viewer navigates from an initial viewpoint interface through a sequence of viewpoints, which sequence the system records. When...http://www.google.com.mx/patents/US6104406?utm_source=gb-gplus-sharePatent US6104406 - Back away navigation from three-dimensional objects in three-dimensional workspace interactive displays
