With this command you define a new co-ordinate system by selecting an ATHENA 3D object (bar or infill) or also an AutoCAD object (e.g. polyline). Then you obtain further options for aligning the UCS.
Input request
Select objects or [Origin/?]:
Use the mouse to select an object for the definition of a new coordinate system.
Select the Option Origin to move the coordinate origin.
With the option ? you call the help.
Select edge of plane or [Mirror/Rotate/Origin/Back/?]:
Select an edge to define the surface of the X-Y plane or choose an option.
Choose the option Undo to repeat the previous input request.
Select surface median or [Mirror/Rotate/Origin/Back/?]:
Select an object to determine the surface median. ATHENA determines the surface median from the surfaces given by the selected edges.
