Join 3D Polyline

This command joins 3DPOLY entities into a single 3D polyline entity.

Prompts

Select the 3D polyline to join: pick a 3D polyline
Select the other 3D polyline to join: pick a 3D polyline that has a common endpoint with the first
3 segments added to the polyline.

Pulldown Menu Location: Edit > 3D Polyline Utilities
Keyboard Command: join3d
Prerequisite: Plot the 3DPoly lines to use for selection