To create a 3D profile based on loop or face, use the following option of the main command automenu:
<L> Select Loop
<F> Select Face
To create the profile, upon turning on one of these modes, simply click on an appropriate 3D element in the 3D window: a loop (a closed set of body edges) or a body face. The selected elements are highlighted. When selecting a set of body faces, one can adjust the selection, if necessary: a single face – by clicking on the face again, all currently selected faces – by the automenu option:
<K> Cancel selection
To complete the profile creation, use .