I was editing my post while you were posting back.....


""""""""""But he's looking to find a location on a curve where the curve perpendicular matches a particular cline direction - that would be a new kind of snapping function (but one that can currently be done by perp/perp snap instead), just keeping clines doesn't give that.""""""""""""

Yeah, I saw that and was thinking of the perp/perp, but he seems to be wanting to do it kindof "backwards', and I thought that the keep c-lines would let him do it. It's kindof the same as drawing an actual "line first", then having that to work with.