Manages user coordinate systems

Controls the visibility and placement of the UCS icon

Manages defined user coordinate systems

Displays the number of the appropriate error code when an AutoLISP function call causes an error that AutoCAD detects

Stores the name of the UCS that defines the origin and orientation of orthographic UCS settings in paper space only

Generates a plan view whenever you change from one UCS to another

Stores the name of the current coordinate system for the current viewport in the current space

Stores the origin point of the current coordinate system for the current viewport in the current space

Determines whether the related orthographic UCS setting is restored automatically when an orthographic view is restored

Stores the X direction of the current UCS for the current viewport in the current space

Stores the Y direction of the current UCS for the current viewport in the current space