The present invention prevents peak noise caused by a resonance frequency, and reduces an overall noise of the system by binding core teeth of a stator of a BLDC motor with a vibration prevention member. A sheet metal retainer for retaining the fiber block in the forward position, includes a latch that lies in the path of rearward movement of a shoulder on the fiber block as the fiber block moves rearwardly from its forward position, to resist such movement with a force of a plurality of pounds. A null-clear operation to a file entity of the file is distributed to a plurality of event handlers including the deletion handler. When the event is triggered, a displaying unit displays a message on or near a mouse cursor to remind a user of the triggered event. Retractable pins enable a user to easily mount the line generator onto a wall and align objects. 01 of a foot print of the conductive element in a current conductive area.