Connect Polylines

The Boundary | Edit Polylines | Connect Polylines command joins two or more selected polylines to form a single curve. The polylines are connected at the closest endpoints in the selected curves. You must select two or more curves for this command to be active. The line style, width, and color of the connected curve is set to the default settings. You can assign IDs to the new curve in the Object Manager or Property Manager.

Select two or more curves to connect them to create one curve.