Abstract: A computer network, having at least three nodes for implementing predetermined functions, comprises an OBJECT PASSING AGENT (OPA) storing the access authorizations of the individual nodes relative to each other. By means of calls (passing, returned), the stored access authorizations may be modified. With the aid of a further call (inquire), access authorizations may be verified. The desired access authorizations are defined by the user in the interface descriptions of the individual nodes. These descriptions are used by a compiler to generate the previously mentioned calls for modifying or verifying access authorizations. To permit a node to access the function of another node, an access authorization to that effect (passing) is stored in OPA. Prior to implementation, each access is verified (inquire). Upon completion of the access, the access authorization in OPA is erased (returned). These calls are handled automatically, ensuring that node access operations are readily implemented.

Abstract: To supply an arriving and delivered portion of a traveling web (1, 21, 31, 41, 81, 91, 101) to have the same side-orientation as the delivered portion, the web is passed about a first turning bar (2), then looped about a first deflection roller (3), and spanning the arriving portion of the web, about a second deflection roller (4) to be then turned again, selectively, by a second turning bar (5). Other web paths are possible, omitting the second deflection roller (4). Rather than using a single second deflection roller, smaller roller elements (FIG. 11: 16, 17) can be used, the second deflection roller, or the elements having effective diameters which are larger than the diameter of the first deflection roller.