AutoCAD 2008 User's
Guide > Create and Modify
Objects > Use Precision
Tools > Use Coordinates and
Coordinate Systems (UCS) > Specify Workplanes
in 3D (UCS) > Understand the User
Coordinate System in 3D >
To enter coordinates relative to the WCS
To enter coordinates relative to the WCS
Entering @*2,0,0 specifies a point two units in the X direction of the last point entered relative to the WCS. Entering @2,0,0 specifies a point two units in the X direction of the last point entered relative to the UCS.
In practice, most coordinates are entered relative to the UCS rather than the WCS.
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