Share Email Facebook Twitter LinkedIn CurveExtents.StartParameter Property The start parameter of the curve extents. Namespace: Autodesk.Revit.DBAssembly: RevitAPI (in RevitAPI.dll) Version: 26.4.0.0 (26.4.0.0) Syntax C# public double StartParameter { get; }Property ValueDouble See AlsoReferenceCurveExtents ClassAutodesk.Revit.DB Namespace