	Name	Description
	COLUMNGROUP_SERIALIZATIONSTRING	Represents the constant serialization string for ColumnGroup. This field is constant and read-only.
	ROWGROUP_SERIALIZATIONSTRING	Represents the constant serialization string for RowGroup. This field is constant and read-only.

	Name	Description
	AddGroup	Groups all the rows or columns from the specified start index by the specified amount to an outline (range group).
	AddIndexes	Adds a specified amount of indexes starting with a specified index in an outline (range group).
	ClearRangeGroup	Removes all the outlines (range groups) of rows or columns.
	Deserialize	Loads the contents of an outline (range group) from XML.
	ExpandGroup	Expands an outline (range group) of rows or columns.
	Expands	Overloaded.
	FindGroup	Finds an outline (range group) with the specified level and end index.
	FindGroupByIndex	Finds an outline (range group) with a specified level and index.
	GetCopy	Gets a copy of outlines (range groups) from the specified index with the specified count.
	GetGroupLevels	Gets the level of an outline (range group) of rows or columns.
	GetObjectData	Populates a serialization information object with the data needed to serialize the outline (range group).
	GetOutLineLevel	Gets the outline level of the specified index of the range row or column group.
	GetRangeGroupInfo	Gets an outline (range group) by level.
	IsCollapsed	Determines if a row or column belongs to any closed outline (range group). Row or column indexWhether the outline (range group) is of rowsBoolean: true if the row or column belongs to a closed range group; otherwise, false
	Move	Moves an outline (range group) by the specified indexes.
	PasteGroup	Pastes an outline (range group) into a segment starting with the paste index.
	RemoveGroup	Removes rows or columns from the outline (range group) from the specified index and count, and returns them to individual rows and columns.
	RemoveIndexes	Removes indexes of an outline (range group) starting with the specified index and moving up indexes below that.
	Serialize	Saves the contents of an outline (range group) to XML.

	Name	Description
	Changed	Occurs when the outline (range group) model has changed.
	Changing	Occurs when the outline (range group) model is changing.

Reference