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autocad similar command

UCSYDIR system variable

Function Description:

The UCSYDIR system variable is used to store the Y direction of current UCS in current viewport of current space.
(Read-Only)

Type : 3D point
Saved in : Drawing
Initial value : 0.0000,1.0000,0.0000

The Y direction of UCS could be different for each viewport.

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gstarcad

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