Model-Based Definition > Model-Based Definition
Model-Based Definition
In Model-Based Definition (MBD) you create and manage annotations directly in the context of 3D models. Fully annotate your 3D models so that they can be used directly by downstream functions such as manufacturing and inspection, eliminating the need for 2D detailed drawings as an engineering deliverable.
Use the Help to learn about creating and managing annotation features with annotation elements such as dimensions, Geometric Tolerances (GTOLs), symbols, and notes to document the design and manufacturing requirements. The Help also shows you how to create driving dimension annotation elements to reuse the dimensions that drive model geometry. You will learn how to manipulate the orientation and position of the annotations and how to organize the display of the annotations using combination states.