Sets up the specifications of a drawing.

Displays the plan view of a specified user coordinate system

Manages user coordinate systems.

Controls the visibility and placement of the UCS icon.

Manages defined user coordinate systems.

Controls the visibility and placement of the UCS icon.

Determines whether the UCS in viewports remains fixed or changes to reflect the UCS of the current viewport.

Stores the view rotation angle for the current viewport measured relative to the WCS.

Controls whether the view within a viewport is rotated with the viewport when the viewport is rotated.