Index: DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.Io/IoSlipCircleDefinition.cs
===================================================================
diff -u -r3164 -r3170
--- DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.Io/IoSlipCircleDefinition.cs	(.../IoSlipCircleDefinition.cs)	(revision 3164)
+++ DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.Io/IoSlipCircleDefinition.cs	(.../IoSlipCircleDefinition.cs)	(revision 3170)
@@ -21,7 +21,9 @@
 
 namespace Deltares.LayerOnSlopeTool.Io
 {
-    /// <summary>Slipcircle Defintion type</summary>
+    /// <summary>Slipcircle Defintion type
+    /// This is only a partial implementation, because more is not needed for this tool
+    /// </summary>
     public class IoSlipCircleDefinition
     {
         /// <summary>Gets or sets the grid size determination.</summary>
Index: DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.Io/IoGeometryCreationOptions.cs
===================================================================
diff -u -r3161 -r3170
--- DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.Io/IoGeometryCreationOptions.cs	(.../IoGeometryCreationOptions.cs)	(revision 3161)
+++ DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.Io/IoGeometryCreationOptions.cs	(.../IoGeometryCreationOptions.cs)	(revision 3170)
@@ -21,7 +21,8 @@
 
 namespace Deltares.LayerOnSlopeTool.Io
 {
-    /// <summary>Geometry Creation Options type</summary>
+    /// <summary>Geometry Creation Options type
+    /// This is only a partial implementation, because more is not needed for this tool</summary>
     public class IoGeometryCreationOptions
     {
         /// <summary>Gets or sets the type of the soil geometry.</summary>
Index: DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.StiFileCreator/StiFileCreator.cs
===================================================================
diff -u -r3164 -r3170
--- DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.StiFileCreator/StiFileCreator.cs	(.../StiFileCreator.cs)	(revision 3164)
+++ DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.StiFileCreator/StiFileCreator.cs	(.../StiFileCreator.cs)	(revision 3170)
@@ -23,6 +23,8 @@
 using System;
 using System.IO;
 using System.Text;
+using Deltares.LayerOnSlopeTool.Data;
+using CharacteristicPointType = Deltares.LayerOnSlopeTool.Io.CharacteristicPointType;
 
 namespace Deltares.LayerOnSlopeTool.StiFileCreator
 {
@@ -36,43 +38,87 @@
             ValidateInput(stiFileCreatorInput);
 
             // TODO process file
-            var mStabDAMInterface = new DGSMStabDAMInterface();
+            var mStabDamInterface = new DGSMStabDAMInterface();
             IoMStabDamDoc ioMStabDamDoc = CreateMStabDamDocFromInput(stiFileCreatorInput);
             tnsPrefixDamMStabDoc xmlDamMStabDoc = FillXmlDamMStabDocFromIo.FillXmlDamMStabDoc(ioMStabDamDoc);
             string xmlString = MStabDamXmlSerializer.SaveDamMStabDocAsXmlString(xmlDamMStabDoc);
-            var length = xmlString.Length;
             File.WriteAllText(stiFileCreatorInput.OutputFilename + ".xml", xmlString, Encoding.ASCII);
-            int result = mStabDAMInterface.CreateProjectFile(xmlString);
+            int result = mStabDamInterface.CreateProjectFile(xmlString);
             if (result != 0)
             {
-                string errorMessage = mStabDAMInterface.ErrorMessage();
+                string errorMessage = mStabDamInterface.ErrorMessage();
                 throw new Exception(String.Format("Error {0} in DGSMStabDamDll.CreateProjectFile(): '{1}'", result, errorMessage));
             }
         }
 
         private static IoMStabDamDoc CreateMStabDamDocFromInput(StiFileCreatorInput stiFileCreatorInput)
         {
             var ioMStabDamDoc = new IoMStabDamDoc();
+
+            // The following options are not set, so a .sti file can be generated.
+            // These are mandatory in the the DGSMStabDam interface, but are not important for the .sti file generation
+            DefineDefaultSettings(ioMStabDamDoc.MStabInput);
+
+            // The following options are the essential for a correct creation of the .sti file
             ioMStabDamDoc.MStabInput.MStabFileName = stiFileCreatorInput.OutputFilename;
-            ioMStabDamDoc.MStabInput.Model.CalculationModel = ModelType.Bishop;
-            ioMStabDamDoc.MStabInput.Model.GridPosition = GridPositionType.Right;
-            ioMStabDamDoc.MStabInput.Model.Probabilistic = false;
-            ioMStabDamDoc.MStabInput.Model.SearchMethod = SearchMethodType.Grid;
-            ioMStabDamDoc.MStabInput.Model.ShearStrength = ShearStrengthType.CPhi;
             ioMStabDamDoc.MStabInput.GeometryCreationOptions.SoilGeometryType = SoilGeometryType.SoilGeometry2D;
             ioMStabDamDoc.MStabInput.GeometryCreationOptions.MaterialForDike = stiFileCreatorInput.DikeMaterialName;
             ioMStabDamDoc.MStabInput.GeometryCreationOptions.XOffsetSoilGeometry2DOrigin = stiFileCreatorInput.XOffset;
             ioMStabDamDoc.MStabInput.GeometryCreationOptions.SoilGeometry2DFilename = stiFileCreatorInput.InputFilename;
             ioMStabDamDoc.MStabInput.GeometryCreationOptions.PlLineAssignment = PlLineAssignment.NoPlLines;
-            ioMStabDamDoc.MStabInput.CalculationOptions.ZonesType = ZonesType.NoZones;
-            ioMStabDamDoc.MStabInput.TrafficLoad.DegreeOfConsolidationSpecified = false;
-            ioMStabDamDoc.MStabInput.SlipCircleDefinition.BishopTangentLinesDefinition =
-                TangentLinesDefinitionType.OnBoundaryLines;
-            ioMStabDamDoc.MStabInput.SlipCircleDefinition.BishopTangentLinesDefinition =
-                TangentLinesDefinitionType.OnBoundaryLines;
-            ioMStabDamDoc.MStabInput.SlipCircleDefinition.GridSizeDetermination = GridSizeDeterminationType.Automatic;
+
+            // the Pl-Lines that are created are not important, but should be present
             double leftSide = stiFileCreatorInput.SurfaceLine.SurfaceLinePoints[0].XCoordinate;
             double rightSide = stiFileCreatorInput.SurfaceLine.SurfaceLinePoints[stiFileCreatorInput.SurfaceLine.SurfaceLinePoints.Count - 1].XCoordinate;
+            DefineDefaultPlLines(leftSide, rightSide, ioMStabDamDoc);
+
+            TransferSurfaceLine(stiFileCreatorInput.SurfaceLine, ioMStabDamDoc);
+
+            return ioMStabDamDoc;
+        }
+
+        private static void DefineDefaultSettings(IoDamMStabInput mStabInput)
+        {
+            mStabInput.Model.CalculationModel = ModelType.Bishop;
+            mStabInput.Model.GridPosition = GridPositionType.Right;
+            mStabInput.Model.Probabilistic = false;
+            mStabInput.Model.SearchMethod = SearchMethodType.Grid;
+            mStabInput.Model.ShearStrength = ShearStrengthType.CPhi;
+            mStabInput.CalculationOptions.ZonesType = ZonesType.NoZones;
+            mStabInput.TrafficLoad.DegreeOfConsolidationSpecified = false;
+            mStabInput.SlipCircleDefinition.BishopTangentLinesDefinition =
+                TangentLinesDefinitionType.OnBoundaryLines;
+            mStabInput.SlipCircleDefinition.BishopTangentLinesDefinition =
+                TangentLinesDefinitionType.OnBoundaryLines;
+            mStabInput.SlipCircleDefinition.GridSizeDetermination = GridSizeDeterminationType.Automatic;
+        }
+
+        private static void TransferSurfaceLine(SurfaceLine surfaceLine, IoMStabDamDoc ioMStabDamDoc)
+        {
+            for (int i = 0; i < surfaceLine.SurfaceLinePoints.Count; i++)
+            {
+                var surfaceLinePoint = surfaceLine.SurfaceLinePoints[i];
+                ioMStabDamDoc.MStabInput.SurfaceLine.Add(new IoGeometryPoint()
+                {
+                    X = surfaceLinePoint.XCoordinate,
+                    Y = surfaceLinePoint.ZCoordinate
+                });
+                CharacteristicPointType ioCharacteristicPointType =
+                    ConversionHelper.ConvertDomainToIo(surfaceLinePoint.PointType);
+                if (ioCharacteristicPointType != CharacteristicPointType.Unknown)
+                {
+                    ioMStabDamDoc.MStabInput.CharacteristicPoints.Add(new IoCharacteristicPoint()
+                    {
+                        X = surfaceLinePoint.XCoordinate,
+                        Y = surfaceLinePoint.ZCoordinate,
+                        CharacteristicPointType = ioCharacteristicPointType
+                    });
+                }
+            }
+        }
+
+        private static void DefineDefaultPlLines(double leftSide, double rightSide, IoMStabDamDoc ioMStabDamDoc)
+        {
             double yLevel = -10;
             var pl1 = new IoPlLine();
             pl1.Points.Add(new IoGeometryPoint()
@@ -110,27 +156,6 @@
                 Y = yLevel
             });
             ioMStabDamDoc.MStabInput.ExternalPlLines.Add(pl3);
-            for (int i = 0; i < stiFileCreatorInput.SurfaceLine.SurfaceLinePoints.Count; i++)
-            {
-                var surfaceLinePoint = stiFileCreatorInput.SurfaceLine.SurfaceLinePoints[i];
-                ioMStabDamDoc.MStabInput.SurfaceLine.Add(new IoGeometryPoint()
-                {
-                    X = surfaceLinePoint.XCoordinate,
-                    Y = surfaceLinePoint.ZCoordinate
-                });
-                CharacteristicPointType ioCharacteristicPointType = ConversionHelper.ConvertDomainToIo(surfaceLinePoint.PointType);
-                if (ioCharacteristicPointType != CharacteristicPointType.Unknown)
-                {
-                    ioMStabDamDoc.MStabInput.CharacteristicPoints.Add(new IoCharacteristicPoint()
-                    {
-                        X = surfaceLinePoint.XCoordinate,
-                        Y = surfaceLinePoint.ZCoordinate,
-                        CharacteristicPointType = ioCharacteristicPointType
-                    });
-                }
-            }
-
-            return ioMStabDamDoc;
         }
 
         private static void ValidateInput(StiFileCreatorInput stiFileCreatorInput)