Pipe-PAK is a single program written AutoLISP programming language. It enables you to create double-line piping layouts from inside AutoCAD. Whether you are a novice or an advanced AutoCAD operator, this user friendly program is understood the first time through. Since 'TIME IS MONEY' speed and accuracy will be the best reason to purchase this package. All pipes and connections are constructed according to ANSI Specifications. Imagine never having to look up actual pipe diameters, wall thicknesses, elbow, reducers, or tee dimensions. Because Pipe-PAK gathers information from an ASCII DataBases, you have the freedom to modify and/or add whatever sizes needed.