xs xsconstants attribute_declaration element_declaration type_definition attribute_use attribute_group model_group_definition model_group particle wildcard identity_constraint notation_declaration annotation facet multivalue_facet derivation_none derivation_extension derivation_restriction derivation_substitution derivation_union derivation_list scope_absent scope_global scope_local vc_none vc_default vc_fixed anysimpletype_dt string_dt boolean_dt decimal_dt float_dt double_dt duration_dt datetime_dt time_dt date_dt gyearmonth_dt gyear_dt gmonthday_dt gday_dt gmonth_dt hexbinary_dt base64binary_dt anyuri_dt qname_dt notation_dt normalizedstring_dt token_dt language_dt nmtoken_dt name_dt ncname_dt id_dt idref_dt entity_dt integer_dt nonpositiveinteger_dt negativeinteger_dt long_dt int_dt short_dt byte_dt nonnegativeinteger_dt unsignedlong_dt unsignedint_dt unsignedshort_dt unsignedbyte_dt positiveinteger_dt listofunion_dt list_dt unavailable_dt