A method and apparatus for controlling a link margin are provided. Proposed edits to the map are queued for review by a reviewer users. The out-of-range mode which has a resolution higher than a mode supported by an LCD monitor so that a user’s system can be easily and conveniently converted into a supported mode without additional apparatus or equipment, can be displayed in the LCD monitor. This device allows for a near ideal rectangular electric field profile at breakdown voltage with sawtooth like ridges. In some of those embodiments the base includes one or more features for attaching the replacement cartridge to the razor assembly. Coils are disposed in the slots of the stator core.