The Mechanism Designer is an engineering design program, with which the user can create, animate, and optimize standard, or completely new, mechanism types. The Mechanism Designer can model a variety of mechanisms using basic mechanism elements, such as cranks, links, rockers and sliders. Mechanisms are easily defined using a combination of interactive sketches and keyboard entry of exact coordinates. In addition, The Mechanism Designer interfaces with all CAD systems that have the facility to read DXF drawing files.