This manual discusses the use and interface of the GibbsCAM 5-Axis Porting option. The Porting module presents a special-purpose interface specifically to create 5-axis toolpath for port-type geometries, such as conduits (ÒtunnelsÓ) that connect apertures of different shapes to one another, blending/morphing from one shape to another. Recommended prior reading: Mill; Getting Started; and either 2.5D Solids or SolidSurfacer. Release Date: January 2014, for GibbsCAM 2015, v11.0