Before the 1070s, nearly every drawing produced in the world done with pencil or ink on paper. Minor changes require erasing and redrawing while major changes often intended recreating the drawing from the scuff. An alteration in a pulling will affect the other documents and all of these changes and acceptance are done manually which is time consuming (iBM. com, 2003). The release of Computer Aided Design (CAD) then makes a change in the form of producing design. CAD is a software..