This .NET class wraps the AcDbFullSubentPath ObjectARX class. 

This class is used for uniquely identifying a subentity within a particular entity. An object of this class consists of array of object IDs and an SubentityId object. 

The subentity ID object contains the graphics system marker of the subentity and the type of the subentity (that is, edge, face, vertex). The object ID array contains a sequential list of the object IDs for all the objects that make up the "path" from the outermost entity (in Model or Paper space) down into the "main" entity that the subentity is a part of. If the subentity's "main" entity is directly owned by the Model Space or Paper Space BlockTableRecords then the object ID array will have only one entry--the object ID of the "main" entity itself. 

For example, an edge of an Solid3d that's within a block definition that's referenced by an BlockReference would result in an object ID array with two object IDs. The first would be the object ID of the BlockReference. The second would be the object ID of the Solid3d.

Public Structure FullSubentityPath
End Structure

public struct FullSubentityPath {
}

GetSubentPathAtGsMarker() method of Entity class returns object of this class for subentity identification purposes. Objects of this class are further used for highlighting and unhighlighting of a particular subentity and creating new entity