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From SofTutor for AutoCAD 3D - Setting Up Drawing For Architectural
Topics covered in this video are:

Drawing A Wall In 3D
Tracking To Draw Lines In 3D
Setting Up Drawing For Architectural
Polyline Command In 3D
Reason For Using Polyline Command In 3D
OSnaps UCS Tracking Demo
OSnaps UCS Placement
Draw XYZ UCS Demo
2D Draw XYZ Pline Demo
Offset 2D Draw XYZ Demo