1./test/relaxng/tutor3_7.rng:1: element element: Relax-NG parser error : xmlRelaxNGParseElement: element has no content 2Relax-NG schema ./test/relaxng/tutor3_7.rng failed to compile 3
1./test/relaxng/tutor3_7.rng:1: element element: Relax-NG parser error : xmlRelaxNGParseElement: element has no content 2Relax-NG schema ./test/relaxng/tutor3_7.rng failed to compile 3