The invention offers a superconducting cable easy to form a twisted structure even when a plurality of cable cores are used and a DC transmission system incorporating the superconducting cable. The contact opening and gate electrode are of substantially the same width, thus allowing for minimized area contact. In this context, the term \u201coutside\u201d of the protocol denotes that there is no field within a protocol packet implementation that can be used to negotiate the capability. As well, the devices can be made by applying microwave energy to an already-deposited dielectric film at a frequency and power density sufficient to cause the atoms of the deposited dielectric material to flow. Tags are defined by a plurality of contiguous cells and each tag comprises respective local tag data encoded by a respective set of the data elements.