Fig 5.1 below shows a small layout of road represented by 3D Polyline

Fig 5.1

 

Fig. 5.2 below shows the vertices of the 3D Polyline marked with Points by choosing the option Points under What to place?
Note:
the points marked can be placed in the Source object layer or Current layer by choosing under Which layer to place?

Fig 5.2

 

Fig. 5.3 below shows the vertices of the 3D Polyline marked with block symbol by choosing the option Blocks under What to place? and specifying required Scale Factor and Rotation angle under Insertion Settings.

Note: the block symbols can be placed in the Source object layer or Current layer by choosing under Which layer to place?

Fig 5.3

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