This class represents a constrained unbounded construction line node in the owning Assoc2dConstraintGroup. 

It does not take any initial value and its position is decided by the constraints applied on it.

Autodesk.AutoCAD.DatabaseServices.ConstraintGroupNode
    Autodesk.AutoCAD.DatabaseServices.ConstrainedGeometry
        Autodesk.AutoCAD.DatabaseServices.ConstrainedCurve
            Autodesk.AutoCAD.DatabaseServices.ConstrainedLine
                Autodesk.AutoCAD.DatabaseServices.ConstrainedConstructionLine
                    Autodesk.AutoCAD.DatabaseServices.Constrained2PointsConstructionLine
                    Autodesk.AutoCAD.DatabaseServices.ConstrainedDatumLine

Public Class ConstrainedConstructionLine
Inherits ConstrainedLine

public class ConstrainedConstructionLine : ConstrainedLine;