1./test/relaxng/tutor9_6_3.xml:2: element card: Relax-NG validity error : Invalid attribute error for element card 2./test/relaxng/tutor9_6_3.xml fails to validate 3
1./test/relaxng/tutor9_6_3.xml:2: element card: Relax-NG validity error : Invalid attribute error for element card 2./test/relaxng/tutor9_6_3.xml fails to validate 3