2012

Table Of Contents
Understand the UCS Icon
The UCS icon indicates the location and orientation of the current UCS. You
can manipulate the UCS icon using grips. For more information, see The UCS
Icon and the UCSICON command.
NOTE If the location of the UCS origin is not visible in a viewport, the UCS icon
is displayed in the lower-left corner of the viewport instead.
Understand the UCS in 3D
When you create or modify objects in a 3D environment, you can move and
reorient the UCS anywhere in 3D space to simplify your work. The UCS is
useful for entering coordinates, creating 3D objects on 2D work planes, and
rotating objects in 3D.
NOTE The UCS icon follows the traditional right-hand rule in determining positive
axis directions and rotation directions.
Change the UCS in Paper Space
You can define a new UCS in paper space just as you can in model space;
however, the UCS in paper space is restricted to 2D manipulation. Although
you can enter 3D coordinates in paper space, you cannot use 3D viewing
commands such as PLAN and VPOINT.
See also:
Control the User Coordinate System (UCS) (page 147)
Work with Named UCS Definitions and Preset Orientations (page 147)
146 | Chapter 6 Create and Modify Objects