This tool displays coordinate systems at the object definition points. By clicking the respective displayed coordinate system of the object, the user coordinate system is aligned to the object.
To access the command
UCS tool palette: 
Command line: _astm4cecs
To define a UCS at an object
- UCS tool palette: Click .
- Select the Advance Steel object. Depending on the object, different axes are displayed. The longest axis corresponds to the Z-orientation of the coordinate system.
- Select the desired coordinate system by clicking the respective axis and press <Enter>.
- A UCS corresponding to the selected coordinate system, is set.
