vrworld/close
(To be removed) Close virtual world
vrworld/close will be removed in a future release. For more
        information, see Version History.
Syntax
close(vrworld_object)
Arguments
| 
 | A  | 
Description
This method changes the virtual world from an opened to a closed state:
- If the world was opened more than once, you must use an appropriate number of - closecalls before the virtual world closes.
- If - vrworld_objectis a vector of- vrworldobjects, all associated virtual worlds close.
- If the virtual world is already closed, - closedoes nothing.
Opening and closing virtual worlds is a mechanism of memory management. When the system needs more memory and the virtual world is closed, you can discard its contents at any time.
Generally, you should close a virtual world when you no longer need it. This allows you
        to reuse the memory it occupied. The vrworld objects associated with this
        virtual world stay valid after it is closed, so the virtual world can be opened again
        without creating a new vrworld object.