Locks are used to protect variables. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. The present invention also relates to the recovery of the solvents used for the above processes via solar energy. A bottom outer surface of the cup is arranged to be engaged by a high voltage spring or the like for making the connection to the spark plug. A Hall effect sensor is mounted within the changing magnetic field produced by the magnet as the rear end of the V-spring assembly is displaced due to pressure on the brushhead. Candidates meeting a probability threshold are identified as matches to the query string.