Do you feel it?

 From:  Frenchy Pilou (PILOU)
4363.36 In reply to 4363.34 
Yes :)
point the center then go to the Left = all touching the circular surface is selected
point the center then go to the Right = all inside the circular surface is selected

A circular 3D Selection? So a sphere selection ;)
Same above 2D Selection : just second click is Z Left/ Right selection