6. The Tools in the Toolbox / 6.4 Tools for Vector Layers
The tool Convert Vector Points is able to convert lines to curves and reverse. It works the same with line and curve points..
It uses the following mouse cursor shapes:
The
mouse cursor is at an invalid position. Therefore, no action is
possible.
The
mouse cursor is over a curve or curve point. By clicking the tool
will create a line.
The
mouse cursor is over a line or line point. By clicking the tool will
create a curve.