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Restore
Restores a saved UCS so that it becomes the current UCS.
Name Specifies a named UCS.
?—List UCS definitions Lists the names of currently defined UCSs.
Save
Saves the current UCS to a specified name.
Name Saves the current UCS with the specified name.
Delete
Removes the specified UCS from the list of saved UCS definitions.
If you delete a named UCS that is current, the current UCS is renamed
UNNAMED.
?—List UCS Definitions
Lists names of saved UCS definitions with the origin and X, Y, and Z axes for
each saved UCS relative to the current UCS. If the current UCS is unnamed,
it is listed as WORLD or UNNAMED, depending on whether it's the same as
the WCS.
Object
Aligns the user coordinate system to a selected object.
The positive Z axis of the UCS is aligned perpendicular to the plane in which
the object was originally created.
The following objects cannot be used with this option: 3D polylines, 3D
meshes, and xlines.
For most objects, the origin of the new UCS is located at the nearest vertex to
where you select the object, and the X axis is aligned with an edge or is tangent
to an edge. For planar objects, the XY plane of the UCS is aligned with the
plane in which the object is located. For complex objects, the origin is
relocated, but the current orientation of the axes is maintained.
1074 | Chapter 21 U Commands