Almost all the AutoCAD drawing and editĬommands can only work in 2D (the exceptions being commands like 3DPOLY and 3DFACE).

If you just want to quickly find a description of the UCS options, click on the appropriate button on the QuickFind toolbar below.ĪutoCAD started life as a two-dimensional drafting program. Producing good 3D models and they can also help with 2D work. The correct use of UCSs with AutoCAD is the key to This tutorial describes what UCSs are, why we need them and how to use them.