sgmls: SGML error at test017.sgm, line 7 in declaration parameter 4:
       Declared value of data attribute cannot be ENTITY or ENTITIES
sgmls: SGML error at test017.sgm, line 8 in declaration parameter 7:
       Declared value of data attribute cannot be ID
sgmls: SGML error at test017.sgm, line 9 in declaration parameter 10:
       Declared value of data attribute cannot be IDREF or IDREFS
sgmls: SGML error at test017.sgm, line 10 in declaration parameter 13:
       Declared value of data attribute cannot be NOTATION
sgmls: SGML error at test017.sgm, line 11 in declaration parameter 18:
       CURRENT cannot be specified for a data attribute
sgmls: SGML error at test017.sgm, line 12 in declaration parameter 21:
       CONREF cannot be specified for a data attribute
