World UCS

World UCS 

1. Type UCS at the command prompt.
Command: ucs
Current ucs name: *NO NAME*
Enter an option [New/Move/orthoGraphic/Prev/Restore/
Save/Del/Apply/?/World] <World> (press enter)
World Returns the UCS back to the original World
UCS.
NOTE: This is the UCS you should use
when creating Wblocks and inserting Wblocks.
It is the only UCS guaranteed to be the same in
all AutoCAD drawings.
Tip: To enter coordinates relative to the WCS
• Precede coordinate values with an asterisk (*).
Entering @*2,0,0 specifies a point two units in the X direction of the last point entered
relative to the WCS.
Entering @2,0,0 specifies a point two units in the X direction of the last point entered
relative to the UCS.
In practice, most coordinates are entered relative to the UCS rather than the WCS.