PdfLayoutAttributesAn attribute object owned by Layout: how an element's content is laid out.
PdfListAttributesAn attribute object owned by List, on an L element.
PdfMarkedContentReferenceA content item that is a marked-content sequence: an integer MCID in a structure element's K, or a marked-content reference dictionary (/Type /MCR).
PdfMarkInfoThe document's mark information dictionary: whether it is a tagged PDF and which tagged-PDF conventions it uses.
PdfObjectReferenceA content item that is a whole PDF object, such as an annotation or an XObject: an object reference dictionary (/Type /OBJR).
PdfPrintFieldAttributesAn attribute object owned by PrintField: the role and state of a non-interactive form field, on a Form element.
PdfPropertyListA typed view of a marked-content sequence's tag and property list (the operands of BDC or DP): its MCID, whether it is an artifact and of what kind, and the accessibility entries a Span may carry.
PdfStructureElementA structure element: one node of a document's structure tree, a live view over its structure element dictionary.
PdfStructureNamespaceA structure namespace: a namespace dictionary of the structure tree, or one of the namespaces the standard defines.
PdfStructureTreeRootThe root of a document's structure tree: its top-level elements, role and class maps, namespaces, and the lookups from content to elements.
PdfStructureTypeA structure type in a namespace: one step of a role-mapping chain, or the standard type an element resolves to.
PdfTableAttributesAn attribute object owned by Table, on a table or its cells.
PdfUserPropertiesAttributesAn attribute object owned by UserProperties: application-specific properties of an element, such as those of a CAD object.