This .NET class wraps the AcGePosition2d ObjectARX class. It represents a point in 2D space.

Autodesk.AutoCAD.Geometry.Entity2d
    Autodesk.AutoCAD.Geometry.PointEntity2d
        Autodesk.AutoCAD.Geometry.Position2d

Public sealed Class Position2d
Inherits PointEntity2d

public sealed class Position2d : PointEntity2d;