By default, the origin and the values for the X, Y, and Z axes are calculated relative to the world coordinate system.
The following options are displayed.
Displays the name of the current named UCS.
Displays the UCS origin relative to the UCS selected in Relative To.
Displays the values for the X axis relative to the UCS selected in Relative To.
Displays the values for the Y axis relative to the UCS selected in Relative To.
Displays the values for the Z axis relative to the UCS selected in Relative To.
Sets a base coordinate system for calculating the values for Origin, X Axis, Y Axis, and Z Axis. (UCSBASE system variable)