1. A graphical data-compressor for compression of received, arbitrary graphical data for subsequent transmission; said graphical data-compressor comprising an input for reception of said received arbitrary graphical data, an analyzer linked to said input and operable for analysis of said received arbitrary graphical data into constituent geometrical parts, a scene describer, linked to said analyzer for description of at least some of said constituent geometrical parts as a functional description of said received arbitrary graphical data, and a transmitter linked to said functional scene describer for transmission of said analytic description.