Once you created the first row of poles, you can mouse-over any pole, which will be selected,
and draw a new row. Start with a realistic distance to the selected pole.
If you have selected (only mouse-over !!!) the end pole, the row will be continued.
If you have selected (only mouse-over !!!) a pole somewhere inbetween, a new branch will be created.
Within a session, also pole parameters will be adapted, especially the randomized wires.
This is very useful for poles in a modelled terrain. Whith normal pole distances the pole may 'touch' the ground, so drawing a short sequence with short distance between the poles helps to cross sloped areas.
Leave the tool via 'start new row' from the context to start a new row.
