Hello- for an existing curve, Move the end control point from its current location to an AlongLine snap combined with Tan, from the second control point to the tan point - any place on that line will do. Then drag to the Tan snap.
@miano, are you making a control point curve or an interpolated curve? If interpolated, I can imagine the result is not tangent - the Tan snap will set the point a line tangent from the last point, not make the curve tangent. InterpCrv has command line options for that however.
-Pascal
Interpolated. It appears that, if I do a polyline through the points and make the end tangent to the curve or to a control point curve, the end tangent is at the same location.
But then, the curve does not go through the points I need it to go through. I have yet to find any purpose for control point curve. I see used in videos doing free form drawing. But when trying to match plans, I cannot find a use for it.