Index: dam engine/trunk/src/Deltares.DamEngine.Interface/FillXmlOutputFromDam.cs
===================================================================
diff -u -r460 -r520
--- dam engine/trunk/src/Deltares.DamEngine.Interface/FillXmlOutputFromDam.cs	(.../FillXmlOutputFromDam.cs)	(revision 460)
+++ dam engine/trunk/src/Deltares.DamEngine.Interface/FillXmlOutputFromDam.cs	(.../FillXmlOutputFromDam.cs)	(revision 520)
@@ -1,8 +1,8 @@
 // Copyright (C) Stichting Deltares 2017. All rights reserved.
 //
-// This file is part of the DAM Engine.
+// This file is part of the Dam Engine.
 //
-// The DAM Engine is free software: you can redistribute it and/or modify
+// The Dam Engine is free software: you can redistribute it and/or modify
 // it under the terms of the GNU Affero General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.
Index: dam engine/trunk/src/Deltares.DamEngine.Interface/EngineInterface.cs
===================================================================
diff -u -r501 -r520
--- dam engine/trunk/src/Deltares.DamEngine.Interface/EngineInterface.cs	(.../EngineInterface.cs)	(revision 501)
+++ dam engine/trunk/src/Deltares.DamEngine.Interface/EngineInterface.cs	(.../EngineInterface.cs)	(revision 520)
@@ -30,6 +30,9 @@
 
 namespace Deltares.DamEngine.Interface
 {
+    /// <summary>
+    /// The main interface class for accessing the Dam Engine
+    /// </summary>
     public class EngineInterface
     {
         private ProgressDelegate progressDelegate;
@@ -39,7 +42,7 @@
         /// <summary>
         /// Initializes a new instance of the <see cref="EngineInterface"/> class.
         /// </summary>
-        /// <param name="modelInput">The model input.</param>
+        /// <param name="modelInput">Xml string containing the model input.</param>
         public EngineInterface(string modelInput)
         {
             if (String.IsNullOrEmpty(modelInput))
@@ -150,9 +153,10 @@
         /// <summary>
         /// Runs this instance.
         /// </summary>
-        /// <returns>Errors and warnings in an XML string</returns>
-        public string Run(out string outputXml)
+        /// <returns>Returns the output in an XML string</returns>
+        public string Run()
         {
+            string outputXml;
             SendMessage(new LogMessage() { MessageType = LogMessageType.Info, Message = "Start calculation" });
 
             switch (DamProjectData.DamProjectType)
Index: dam engine/trunk/src/Deltares.DamEngine.Interface.Tests/EngineInterfaceTests.cs
===================================================================
diff -u -r501 -r520
--- dam engine/trunk/src/Deltares.DamEngine.Interface.Tests/EngineInterfaceTests.cs	(.../EngineInterfaceTests.cs)	(revision 501)
+++ dam engine/trunk/src/Deltares.DamEngine.Interface.Tests/EngineInterfaceTests.cs	(.../EngineInterfaceTests.cs)	(revision 520)
@@ -50,10 +50,9 @@
             string inputString = File.ReadAllText(fileName);
             EngineInterface engineInterface = new EngineInterface(inputString);
             Assert.IsNotNull(engineInterface.DamProjectData);
-            string outputString;
-            var calculationMessages = engineInterface.Run(out outputString);
-            Assert.IsNotNull(calculationMessages);
+            string outputString = engineInterface.Run();
             Assert.IsNotNull(outputString);
+            Assert.IsNotNull(outputString);
 
         }
     }
Index: dam engine/trunk/src/Deltares.DamEngine.Data/Standard/Delegates.cs
===================================================================
diff -u -r452 -r520
--- dam engine/trunk/src/Deltares.DamEngine.Data/Standard/Delegates.cs	(.../Delegates.cs)	(revision 452)
+++ dam engine/trunk/src/Deltares.DamEngine.Data/Standard/Delegates.cs	(.../Delegates.cs)	(revision 520)
@@ -36,7 +36,7 @@
     public delegate void SendMessageDelegate(LogMessage logMessage);
 
     /// <summary>
-    /// Check if a user abort is requeste
+    /// Check if a user abort is requested
     /// </summary>
     /// <returns>true if user requested an abort; else false</returns>
     public delegate bool UserAbortDelegate();