Flow
Select a "base curve" for project a curve on a surface

Select a "base surface" for project a curve ,surface or a volume on a surface or a volume !

<< Is there a way to transform one object and get the same transformation in another?

Take an object, make a "mirror"
all transformation of the first object will change the second object! (Move, Size, Rotation)
As soon as the first or second object will have any personnal transformation link will be broken!