TXFANode.XMLContentKind Field
XMLContentKind: TXFAXMLContentKind;
Defaults to xckText and only means something for #text nodes; IsCDATA tells ordinary text apart from CDATA within that content kind
Use AddComment and AddProcessingInstruction to create owned nontext nodes with validation and proper parent text aggregation
This field is native metadata and will not turn an element into a content node; editing it directly leaves the caller maintaining the node name and its parent's text aggregation
Serialisers reject malformed nontext payloads before their markup is written