I think it`s included if you use an autoCAM software, otherwise if you`re like me that uses a custom CAM for programming it`ll be the experience that will teach you how hard the material is and how fast your movement will be, for non metals it`ll be a breeze but for metal works sometimes an autoCAM software snaps or melts you a tool bit, you can quickly recognize the hardness of material thru a nose dive test of 0.3mm, that`s the time you can determine how fast you`re going to plunge the tool bit or how fast you`re going to move the spindle. every manual machinist knows this technique (im a manual machinist too), things like HSS or carbide tool bit capabilities and their low/max speed limits, it`s like performing a manual machining but with a robot hands (accurate, precise even on a million loops)