TXFAResolveInstanceProperty
Unit: HPDFXFALayout
TXFAResolveInstanceProperty = function(Document: TXFADocument; Node,
DataNode: TXFANode; const PropertyName: AnsiString): AnsiString of object;
Optional instance property resolver used by layout and runtime; resolve presence, access or bindingName from the current document and data context, including during snapshot restoration
See Dynamic XFA Instance Presentation for binding and selector rules, supported event syntax, budget defaults, transactional publication, persistence, painting and compatibility boundaries