Construction Lines....Again!

 From:  Frenchy Pilou (PILOU)
3847.4 In reply to 3847.3 
In general circles are used in any cases for find some tricky intersections
(in many artisanal craft, wood, stone etc...)
So I believe you can use it for obtain the intersections, and at the end of the session, you can erase all points in a one Browser selection movement ;)
limitation of the script : it works only in views plan! Not in 3D!