The “Orientate Shell”-component lets one control local x- and z- directions of the faces which make up a shell: “X-Oris” and “Z-Oris” inputs expect lists of direction vectors, one for each mesh face. In case the number of vectors does not match the number of faces the longest list principle applies. Infeasible directions (e.g. a prescribed z-vector which lies in the plane of an element) get ignored.