Hi Pilou,

> An other Helper lines like circles, arc, rectangle...? ;)

I haven't been planning on it, that would tend to add quite a lot of extra commands.

A construction line is kind of a special case since it extends infinitely in either direction unlike a regular line. So it offers something extra than just a regular line.

A "construction circle" wouldn't really offer anything similarly extra to a regular circle.

In version 2 I would like to make it possible to lock objects to prevent them from being selected, but remain snappable. At that time you would be able to draw a circle, set it to have a dashed line style, and then lock it and that would end up being the same thing as a construction circle.

- Michael