| http://www.w3.org/ns/prov#value | - nt of the invention, with the window being shown closed and opened, respectively; and [0045] FIG. 5 is a diagrammatic and fragmentary view of a variant embodiment of FIG. 1.[0046] FIG. 1 shows a workstation 1 of the invention comprising a structure 2 supported by a stand 3. [0047] The structure 2 has a frame 2a supporting four screens 5 disposed in a rectangular 2 by 2 matrix. [0048] In the exampl
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