GGU-CAD: "Break" menu item
Four lines can be generated by clicking on two intersecting lines; they all then have a new starting point at the previous intersection.

It is then possible to delete one of the four new lines, for example.
Four lines can be generated by clicking on two intersecting lines; they all then have a new starting point at the previous intersection.
It is then possible to delete one of the four new lines, for example.