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.

View


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.

Origin


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.

3Point


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.

X


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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