How can I create an intersection curve in SW?

Here are two surfaces that I want to have a 3D curve sketch where the two intersect.
In this example there are two surfaces bodies used but you can do this with any two faces (even solid bodies) that intersect.

Answered with a tutorial: https://grabcad.com/tutorials/how-can-i-create-an-intersection-curve-in-sw

On a solid model
start a 3d sketch
Convert entities and select intersection curve
This also works with projected curves to get sketch enties

No, that is not what I wanted. An intersected curve is a curve that has been made when, for example, you have to surfaces that are intersecting. After that you use a command intersection curve which can be find in tools - sketch tools.
Than you select both surfaces and sketch appears on the intersecting place of those surfaces. You can also create this with planes and solid bodies.