A system is taught in which a module having processing elements can access network and storage interfaces that are external to the module of the processing elements as though those interfaces were located internal to the module of the processing elements. For example, upon receipt of a dispatch-session invitation from a dispatch server, the client may accept the invitation only if the energy level is low enough and may then bridge the dispatch communications with the local communications, and otherwise the client may reject the invitation. A diffraction grating transforms the optical signal into its spectral components. Bales are enveloped by severing the web and thereby providing a bag with an open end, separating the bag walls, inserting a bale therein, closing the bag and severing from the remaining web. The anchor bar member includes a dovetail cavity, frictionally wedgingly yet releasably receiving the panel concave cavities.