How to move one bspline so is tangent to other two

quarich said:

I want to move the selected spline to a position where it is perfectly tangent to the two below

Have you tried tangent snap?

That doesn't work, since it only works for 2 elements at once, not three, and rotates the element which is not what I want:

Please advise on version being used.

If using MicroStation CONNECT Edition one option is to use 3D Constraints.

First you will need to 'Fix' the curves not to be moved, then Constrain the remaining curve to them.

Carl Myhill said:

First you will need to 'Fix' the curves not to be moved, then Constrain the remaining curve to them.

If when your  finished and  you  use the remove constraints option from the contraints  tool , does  it leaves the  lines where you left them  tangential but  not  constrained as we may want to modify the lines at a later time.. and  it makes it hard  on next user  to figure out its constrained as we turn off the markers ie no hints left... haha...

Why is this option not available in a 2D model?

It seems like a very basic set of constraints and should be equally applicable to both 2D and 3D models.

Regards,
Ron