Hi brash,

> maybe possible add this function "perp locator"?

Maybe, but I'm not sure how it would work for just regular picks which in general only have a "previous point" defined for finding perpendiculars. Do you mean it would be added only specifically to the construction line relocation only? That's getting pretty highly specialized, and it might be tricky to give a good label to actually show what was happening there, I can't really just say "perp" because the regular "perp" snap does something different than that (using the direction from the previous point).

- Michael