CANVAS 

Canvas from the world leader in image management and technical illustration software – ACD Systems, is a dual platform technical drawing program that incorporates image editing, page layout, Web graphics and presentation features.
Canvas is targeted at technical professionals in business, science and engineering - an orientation that's refleted in the tools available, the level of precision possible, and the libraries of symbols that ship with the product. Professionals in technical industries have a fully integrated graphics software solution designed with them in mind: