Member name	Value	Description
Document	0	Represents a document
Section	1	Section of document
Body	2	Body of document
HeaderFooter	3	The header and footer of a document
Paragraph	4	The text body items
StructureDocumentTag	5	Represents a structured document tag in a Word document, which is used to mark up content for custom XML data storage, form controls, or other structured data purposes.
StructureDocumentTagInline	6	Represents an inline-level structured document tag
StructureDocumentTagRow	7	Represents a row-level structured document tag
StructureDocumentTagCell	8	Represents a cell-level structured document tag
SDTBlockContent	9	Block-Level Structure Document Tag Content
SDTInlineContent	10	Inline-Level Structure Document Tag Content
SDTRowContent	11	Row-Level Structure Document Tag Content
SDTCellContent	12	Cell-Level Structure Document Tag Content
Table	13	Represents a table structure that can store and manage data in rows and columns.
TableRow	14	Represents a row in a Table.
TableCell	15	Represents a cell in a table row.
TextRange	16	The range of text
Picture	17	Represents a picture or image,
FieldStart	18	Represents the starting position of a field in a document.
Field	19	Represents a field in a document.
FieldMark	20	Represents a marker or indicator used to highlight or denote specific fields within a document
FieldSeparator	21	Represents the separator of a composite field.
FieldEnd	22	Represents the end position of a field in a document.
MergeField	23	Represents a merge field in a document, which is a placeholder for data that will be inserted during a mail merge operation.
SeqField	24	Represents a field within a sequence, often used for unmbering.
EmbededField	25	Represents an embedded field
ControlField	26	Represents a control field
TextFormField	27	Represents a text input form field
DropDownFormField	28	Represents a form field that allows users to select a value from a dropdown list.
CheckBox	29	Represents a checkbox from field
BookmarkStart	30	Represents the starting of a bookmark within a document
BookmarkEnd	31	Represents the end of a bookmark in a document.
MoveFromRangeStart	32	The start of a region whose move source contents are part of a single named move.
MoveFromRangeEnd	33	The end of a region whose move source contents are part of a single named move.
MoveToRangeStart	34	The start of a region whose move destination contents are part of a single named move.
MoveToRangeEnd	35	The end of a region whose move destination contents are part of a single named move.
PermissionStart	36	Represents the start of a permission block
PermissionEnd	37	Represents the end of a permission block
Shape	38	Represents shape object
ShapeGroup	39	Represents a group of shapes that can be manipulated together as a single unit.
ShapeLine	40	Represents a line shape
ShapePath	41	Represents a path that can be used to define the outline or boundary of a shape.
ShapeRect	42	Represents a rectangle shape
Comment	43	Represents a comment annotation.
Footnote	44	Represents a footnote in a document
TextBox	45	Represents a text box
Break	46	Represents a break, such as page berak or column break
Symbol	47	Represents a special symbol character
TOC	48	Table of Contents
XmlParaItem	49	Represents an XML paragraph item
Undefined	50	Represents an undefined or unspecified object.
CommentMark	51	Represents a comment mark.
OleObject	52	Represents an OLE (Object Linking and Embedding) object
CustomXml	53	Represents a custom XML data in a document
SmartTag	54	Represents a smart tag
OfficeMath	55	Represents a mathematical object in a document, such as an equation or formula.
System	56	Reserved for internal use by Spire.Words.
Ruby	57	Phonetic Guide
SubDocument	58	Represents sub document
SpecialChar	59	Represents a special character
GlossaryDocument	60	Represents glossary document.
BuildingBlock	61	Represents a building block
FormField	62	Represents a form field
Any	63	Indicates all Element types. Allows to select all children.

Reference

Spire.Doc.Documents Namespace