Abstract: The underwater cable burial machine uses a single cable for both towing and lifting. The machine includes a retractable cable, which is connected between a retraction mechanism and the towing cable. There is a cable guide through which the retractable cable passes. The cable guide is located over the center of gravity of the machine. In order to use the towing cable to lift the machine, the retraction mechanism pulls the retractable cable and the towing cable until the point where the retractable cable and the towing cable meet is at the cable guide. At that point the towing cable will be over the center of gravity of the machine, and the machine can be lifted onto the surface vessel to which the towing cable is attached.

Abstract: A system and method for selectively controlling database access by providing a system and method that allows a network administrator or manager to restrict specific system users from accessing information from certain public or otherwise uncontrolled databases (i.e., the WWW and the Internet). The invention employs a relational database to determine access rights, and this database may be readily updated and modified by an administrator. Within this relational database specific resource identifiers (i.e., URLs) are classified as being in a particular access group. The relational database is arranged so that for each user of the system a request for a particular resource will only be passed on from the local network to a server providing a link to the public/uncontrolled database if the resource identifier is in an access group for which the user has been assigned specific permissions by an administrator.

Abstract: A public facsimile machine is arranged so that it will only receive an incoming facsimile if the facsimile is preceded by a predetermined security code. In addition, the public facsimile machine is associated with an enhanced facsimile service so that the capabilities provided by such a service, for example, broadcasting a facsimile to a plurality of destinations, may be offered to a user of the public facsimile machine.