Computer aided design is used in the design of machinery and tools that are used in the manufacture of components as well as the design and drafting of a variety of different building types including small residential buildings like homes, and even the largest industrial and commercial structures like factories, corporate towers and hospitals. Computer aided design software programs like Computer aided design 2008 software and Computer aided design student version are mainly used to create detailed engineering of 3-Dimensional models, or 2-Dimensional drawings of physical components. These Computer aided design software programs are also used all throughout the entire engineering process, including the conceptual design phase, the layout of products, the dynamic analysis of assembly, and even the definition of manufacturing methods for components.