1. A method of selectively generating a display of a region of an image from a description of the image, the method comprising the steps of: receiving a request from a client for at least part of said image; in response to receiving said request, performing the steps of: (A) determining a field of view of said client relative to said image; (B) selecting a portion of said description based on said field of view; (C) generating a source text based on the portion of said description that was selected based on said field of view; and (D) delivering the source text to the client.
15. The method recited in claim 1, further comprising the steps of: determining the client's current virtual location in a virtual world represented by the image; identifying nodes of the virtual world that are within a region that is within a field of view of the client; for the identified nodes, generating a VRML file based upon node information about the nodes that is stored in the database; and delivering the VRML file to the client for display at the client.