A magnetic head for use in a perpendicular recording system having a novel shield structure that provides exceptional magnetic shielding from extraneous magnetic fields such as from a write coil, shaping layer or return pole of the write head. After conducting an activation heat treatment of the dopant, a surface of the sourcedrain region is made into cobalt silicide 12, so that the sourcedrain region can have a low resistance, and a pn junction leakage can be reduced. As the result when those engineering decisions were required elsewhere in the engineering documents individuals could only refer to those documents when retabulating the information. The method of designing the card guides includes determining a first and a second volume of space that is desired in relation to the amount of expected heat that is to be generated within the first and second volumes of space. Furthermore, the attachment includes an associated stabilizing mat that is designed to be captured between the seated user and the seat, and that would keep the footrest attachment in an upright and stable condition.