12. A method according to claim 10, wherein the visual attribute is at least one from the list consisting of: a color of the object corresponding to said one of the hypermedia data sets; the size of the object corresponding to said one of the hypermedia data sets; the shape of the object corresponding to said one of the hypermedia data sets; the texture of the object corresponding to said one of the hypermedia data sets; and the degree of focus of the object corresponding to set one of the hypermedia data sets.
10. A method according to claim 8, further comprising the step of representing a parameter associated with one of the hypermedia data sets using a visual attribute of an object corresponding to said one of the hypermedia data sets.