Object Snap | grab distance | ObjectSnapMode?

Hello,

ok …with ctrl I can choose individual OjectPoints … but how can I work further with these points not to depend on normal helplines.

I want to draw a line segment between 2 exact defined points and the line should end in a special distance to the second Point.

It would be so easy if there would be something like ObjectSnap Mode, so you could interrupt your command draw in ObjectSnapMode Helplines to go from helppoints , helplines, helpcircles and so on … and get finally the desired point?

Is there something like this in Rhino?

Hi -

Start the Line command and snap to the first point. Then type from and snap to the second point. Then type your special distance and snap to the first point.
-wim

it works … thank you