| AnnotationElement | Represents a base class for annotation structure elements in logical structure. |
| AnnotElement | Represents Annot structure element in logical structure. |
| ArtElement | Represents Art structure element in logical structure. |
| AttributeKey | Represents Standard Attribute Keys. |
| AttributeName | Represents class for Attribute Name Values. |
| AttributeOwnerStandard | Represents Standard Attribute Owners. |
| BibEntryElement | Represents BibEntry structure element in logical structure. |
| BlockQuoteElement | Represents BlockQuote structure element in logical structure. |
| BLSElement | Represents a base class for block-level structure elements in logical structure. |
| BLSTextElement | Represents a base class for block-level text structure elements in logical structure. |
| CaptionElement | Represents Caption structure element in logical structure. |
| CodeElement | Represents Code structure element in logical structure. |
| DivElement | Represents Div structure element in logical structure. |
| DocumentElement | Represents Document structure element in logical structure. |
| Element | Represents a base class for element in logical structure. |
| ElementList | Represents an ordered collection of elements. |
| ElementListImplementation | |
| FigureElement | Represents Figure structure element in logical structure. |
| FormElement | Represents Form structure element in logical structure. |
| FormulaElement | Represents Formula structure element in logical structure. |
| GroupingElement | Represents a base class for grouping structure elements in logical structure. |
| HeaderElement | Represents Header structure element in logical structure. |
| IllustrationElement | Represents a base class for illustration structure elements in logical structure. |
| ILSElement | Represents a base class for inline-level structure elements in logical structure. |
| ILSTextElement | Represents a base class for inline-level text structure elements in logical structure. |
| IndexElement | Represents Index structure element in logical structure. |
| ITextElement | Interface for presenting text structure elements. |
| ITociElement | Represents an element that can function as a table of contents entry (TOCI) in a tagged PDF document. |
| LinkElement | Represents Link structure element in logical structure. |
| ListChildElement | Represents a base class for children elements of the List in logical structure. |
| ListElement | Represents List structure element in logical structure. |
| ListLblElement | Represents Lbl structure element in logical structure of the list. |
| ListLBodyElement | Represents LBody structure element in logical structure of the list. |
| ListLIElement | Represents LI structure element in logical structure of the list. |
| MCRElement | Represents marked-content reference object in logical structure. |
| NonStructElement | Represents NonStruct structure element in logical structure. |
| NoteElement | Represents Note structure element in logical structure. |
| OBJRElement | Represents object reference entity in logical structure. |
| ParagraphElement | Represents Paragraph structure element in logical structure. |
| PartElement | Represents Part structure element in logical structure. |
| PrivateElement | Represents Private structure element in logical structure. |
| QuoteElement | Represents Quote structure element in logical structure. |
| ReferenceElement | Represents Reference structure element in logical structure. |
| RubyChildElement | Represents a base class for children elements of the Ruby in logical structure. |
| RubyElement | Represents Ruby structure element in logical structure. |
| RubyRBElement | Represents RB structure element in logical structure of the Ruby. |
| RubyRPElement | Represents RP structure element in logical structure of the Ruby. |
| RubyRTElement | Represents RT structure element in logical structure of the Ruby. |
| SectElement | Represents Sect structure element in logical structure. |
| SpanElement | Represents Span structure element in logical structure. |
| StructTreeRootElement | Represents StructTreeRoot object in logical structure. |
| StructureAttribute | Represents attribute of structure element. |
| StructureAttributeCollection | Represents collection of attributes of structure elements. |
| StructureAttributes | Represents attributes of structure element for standard attribute owners. |
| StructureElement | Represents a base class for structure elements in logical structure. |
| StructureTextState | Represents text state settings for TextStructure Elements and TaggedContent (ITextElement, ITaggedContent) |
| StructureTextStateExtensions | |
| StructureTypeCategory | Represents Categories of Standard Structure Types. |
| StructureTypeStandard | Represents Standard Structure Types. |
| TableCellElement | Represents a base class for table cell elements (TH and TD) in logical structure. |
| TableChildElement | Represents a base class for children elements of the Table in logical structure. |
| TableElement | Represents Table structure element in logical structure. |
| TableRowCollectionElement | Represents a base class for children elements of the Table Head, Body and Foot in logical structure. |
| TableTBodyElement | Represents TBody structure element in logical structure of the table. |
| TableTDElement | Represents TD structure element in logical structure of the table. |
| TableTFootElement | Represents TFoot structure element in logical structure of the table. |
| TableTHeadElement | Represents THead structure element in logical structure of the table. |
| TableTHElement | Represents TH structure element in logical structure of the table. |
| TableTRElement | Represents TR structure element in logical structure of the table. |
| TOCElement | Represents TOC structure element in logical structure. |
| TOCIElement | Represents TOCI structure element in logical structure. |
| WarichuChildElement | Represents a base class for children elements of the Warichu in logical structure. |
| WarichuElement | Represents Warichu structure element in logical structure. |
| WarichuWPElement | Represents WP structure element in logical structure of the Warichu. |
| WarichuWTElement | Represents WT structure element in logical structure of the Warichu. |