This manual discusses the use and interface of creating geometry in GibbsCAM. This manual is intended for all GibbsCAM users. The information in this manual applies to the basics of creating geometry (and the basics of a part file in general) across all of the GibbsCAM modules. Recommended prior reading: Getting Started. Last major update: 2006; last revised January 2015, for GibbsCAM 2015, v11.0