It contained facilities to add audio clips to a scene and some very primitive animation. But because it was not enough to create compelling content VRML 1.1 never saw the light of day. Extensibility Composability allows an author to create a city. Scale it down and place it on the table like a model. This table can be placed in a building and building on a planet.
Scalability allows worlds of arbitrary size to be created.
You can be able to see a galaxy, zoom in on one planet, then a city, a statue and a bird sitting on head of this statue. This is difficult due to limits in the precision of computer hardware. Extensibility allows author to extend the capability of the language for special purposes. Author can create some new geometric object or multiusers worlds. Basic VRML Objects 2.