release, discharge, or surrender of a charge, or any part thereof, to all or any part of the land charges, may be effected in the same way as above provided in the case of a transfer. In case only a part of the charge of the land is intended to be released, discharged, or surrendered, the entry shall be made accordingly; but when the whole is released, discharged, or surrendered at the same or several times, the registrar shall stamp across the instrument on file, and the memorial thereof, and the duplicate or certified copy produced, the word cancelled.SOURCE: CC ‘1157.62.