Posted by fa201 on Apr 07, 2020; 8:40pm
URL: https://forum.librecad.org/Joining-or-combining-arcs-lines-etc-tp5718687p5718718.html

The feature does not exist. It was already requested : https://github.com/LibreCAD/LibreCAD/issues/1129.
Polyline works fine if you deal only with lines. If it is a mix of curves and lines then polyline cannot help.