AutoCAD 2002 Bible

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AutoCAD highlights the face and aligns the X axis of the UCS with the closest edge of the first face it finds.

At the Enter an option [Next/Xflip/Yflip] <accept>: prompt, you can now refine the UCS. Right-click and choose Next to move the UCS to the adjacent face or the back face of the selected edge. Right-click and choose Xflip to rotate the UCS 180 degrees around the X axis. Right-click and choose Yflip to rotate the UCS 180 degrees around the Y axis. When you have the UCS you want, press Enter to accept the current location of the UCS.


The View option aligns the X and Y axes with the current view. AutoCAD retains the current origin. The View option is most often used for creating text that you want to appear flat from your viewpoint of a 3D view of the drawing.


The Origin option creates a UCS parallel to the current UCS but with a new origin that you specify. You can use the Origin option for working at a new elevation, instead of changing the current elevation.

Z Axis Vector

The Z Axis Vector option enables you to define an origin and then a point on the positive side of the Z axis. You can keep the previous origin to twist the UCS around its origin.


The first point you specify is the origin, the second point indicates the positive direction of the X axis, and the third point indicates the positive direction of the Y axis.


The X option maintains the current origin and rotates the Y and Z axes around the current X axis at the rotation angle you specify. The most common rotation is 90 degrees or a multiple of 90 degrees, but you can specify any angle.

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