Hallo,
Deklariert habe ich in der DTD folgendes:
<!ENTITY entity_comparison "(less|greater|greater_or_equal|less_or_equal|equal|not_equal|isnull)">
Verwende ein Parameter-Entity:
<!ENTITY % entity_comparison "less|greater|greater_or_equal|less_or_equal|equal|not_equal|isnull">
Dazu gehört nun das condition-element:
<!ELEMENT condition (elem, (elem)?)>
<!ATTLIST condition
comparison (entity_comparison) #REQUIRED>
<!ATTLIST condition comparison %entity_comparison; #REQUIRED>
MfG, Thomas