[ExternalCommands] 
ECCount=1
ECName1 = Compute the length and angle of edges
ECClassName1 = Revit.SDK.Samples.PanelEdgeLengthAngle.CS.SetLengthAngleParams
ECAssembly1 = PanelEdgeLengthAngle.dll
ECDescription1 = Measure curtain panels on divided surfaces, store the length and angle data to parameters