./test/relaxng/tutor3_7.rng:1: element element: Relax-NG validity error : Expecting an element , got nothing
./test/relaxng/tutor3_7.rng:1: element element: Relax-NG validity error : Invalid sequence in interleave
./test/relaxng/tutor3_7.rng:1: element element: Relax-NG validity error : Element element failed to validate content
./test/relaxng/tutor3_7.rng fails to validate