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convert polylines to 3d polylines without creating a surface - Autodesk Community
AutoCAD Tutorial 20: Convert Line to Polyline - Tutorial45
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AutoCAD > Geometry > Convert to 3D Polyline | KobiLabs
2D Polyline to 3D polyline in Civil 3D - YouTube
Free Autolisp: Convert Face to Polyline
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TopoGX - Convert 2D to 3D
2D to 3D Polyline by Points
How To: Convert 2D Points to 3D Lines Using 'From' and 'To' Values
Windows 8 Support: Civil 3D 2013: 2D and 3D Polyline Conversion
Cleaning Up Curves with Excessive Vertices - IMAGINiT Civil Solutions Blog
How To: Convert 2D Points to 3D Lines Using 'From' and 'To' Values
AutoCAD: Polylines
Convert a 2D polyline to 3D from attribiut block - AutoLISP, Visual LISP & DCL - AutoCAD Forums
How do I give a non-flat 3D polygon depth? - Solids Modeling - Vectorworks Community Board
Lisp Help: Collection of AutoLisp for 3D Polyline Entities
Convert 2d to 3d polylines - YouTube
Splines, Polylines and 3D Polylines | Bricsys Blog
Splines, Polylines and 3D Polylines | Bricsys Blog
