Index: Riskeer/Common/src/Riskeer.Common.Forms/ChangeHandlers/IClearIllustrationPointsOfCalculationChangeHandler.cs
===================================================================
diff -u -r2512f89b75968a81c21303ee0faab03b85b1d69a -rf5f388927eb444d2d075724697630cb83c18300b
--- Riskeer/Common/src/Riskeer.Common.Forms/ChangeHandlers/IClearIllustrationPointsOfCalculationChangeHandler.cs	(.../IClearIllustrationPointsOfCalculationChangeHandler.cs)	(revision 2512f89b75968a81c21303ee0faab03b85b1d69a)
+++ Riskeer/Common/src/Riskeer.Common.Forms/ChangeHandlers/IClearIllustrationPointsOfCalculationChangeHandler.cs	(.../IClearIllustrationPointsOfCalculationChangeHandler.cs)	(revision f5f388927eb444d2d075724697630cb83c18300b)
@@ -19,12 +19,10 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
-using Core.Common.Base;
-
 namespace Riskeer.Common.Forms.ChangeHandlers
 {
     /// <summary>
-    /// Interface for an object that can properly clear a illustration points of a single calculation.
+    /// Interface for handling clearing illustration point results from a calculation.
     /// </summary>
     public interface IClearIllustrationPointsOfCalculationChangeHandler
     {
Index: Riskeer/Common/src/Riskeer.Common.Forms/ChangeHandlers/IClearIllustrationPointsOfCalculationCollectionChangeHandler.cs
===================================================================
diff -u -r6d18571198270d2bce752be57493a447fee10680 -rf5f388927eb444d2d075724697630cb83c18300b
--- Riskeer/Common/src/Riskeer.Common.Forms/ChangeHandlers/IClearIllustrationPointsOfCalculationCollectionChangeHandler.cs	(.../IClearIllustrationPointsOfCalculationCollectionChangeHandler.cs)	(revision 6d18571198270d2bce752be57493a447fee10680)
+++ Riskeer/Common/src/Riskeer.Common.Forms/ChangeHandlers/IClearIllustrationPointsOfCalculationCollectionChangeHandler.cs	(.../IClearIllustrationPointsOfCalculationCollectionChangeHandler.cs)	(revision f5f388927eb444d2d075724697630cb83c18300b)
@@ -25,7 +25,7 @@
 namespace Riskeer.Common.Forms.ChangeHandlers
 {
     /// <summary>
-    /// Interface for an object that can properly clear a illustration points from a collection of calculations.
+    /// Interface for handling clearing illustration point results from a collection of calculations.
     /// </summary>
     public interface IClearIllustrationPointsOfCalculationCollectionChangeHandler
     {
Index: Riskeer/Common/src/Riskeer.Common.Util/IllustrationPointsHelper.cs
===================================================================
diff -u -rd4fb475f3f6e36b919118b6c1ed100ce45dbf356 -rf5f388927eb444d2d075724697630cb83c18300b
--- Riskeer/Common/src/Riskeer.Common.Util/IllustrationPointsHelper.cs	(.../IllustrationPointsHelper.cs)	(revision d4fb475f3f6e36b919118b6c1ed100ce45dbf356)
+++ Riskeer/Common/src/Riskeer.Common.Util/IllustrationPointsHelper.cs	(.../IllustrationPointsHelper.cs)	(revision f5f388927eb444d2d075724697630cb83c18300b)
@@ -33,12 +33,11 @@
     public static class IllustrationPointsHelper
     {
         /// <summary>
-        /// Determines whether a collection of <see cref="HydraulicBoundaryLocationCalculation"/>
-        /// contain calculations with illustration point results.
+        /// Determines whether a  <see cref="HydraulicBoundaryLocationCalculation"/> in <paramref name="calculations"/>
+        /// has illustration point results.
         /// </summary>
         /// <param name="calculations">The calculations to check.</param>
-        /// <returns><c>true</c> if <paramref name="calculations"/> contain calculations with
-        /// illustration point results, <c>false</c> otherwise.</returns>
+        /// <returns><c>true</c> when one or more calculations have illustration point results, <c>false</c> otherwise.</returns>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="calculations"/> is <c>null</c>.</exception>
         public static bool HasIllustrationPoints(IEnumerable<HydraulicBoundaryLocationCalculation> calculations)
         {
@@ -51,12 +50,11 @@
         }
 
         /// <summary>
-        /// Determines whether a collection of <see cref="IStructuresCalculation"/> contain
-        /// calculations with illustration point results.
+        /// Determines whether an <see cref="IStructuresCalculation"/> in <paramref name="calculations"/>
+        /// has illustration point results.
         /// </summary>
         /// <param name="calculations">The calculations to check.</param>
-        /// <returns><c>true</c> if <paramref name="calculations"/> contain calculations with
-        /// illustration point results, <c>false</c> otherwise.</returns>
+        /// <returns><c>true</c> when one or more calculations have illustration point results, <c>false</c> otherwise.</returns>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="calculations"/> is <c>null</c>.</exception>
         public static bool HasIllustrationPoints(IEnumerable<IStructuresCalculation> calculations)
         {
@@ -72,7 +70,7 @@
         /// Determines whether a <see cref="IStructuresCalculation"/> has illustration point results.
         /// </summary>
         /// <param name="calculation">The calculation to check.</param>
-        /// <returns><c>true</c> if <paramref name="calculation"/> has illustration point results, <c>false</c> otherwise.</returns>
+        /// <returns><c>true</c> when <paramref name="calculation"/> has illustration point results, <c>false</c> otherwise.</returns>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="calculation"/> is <c>null</c>.</exception>
         public static bool HasIllustrationPoints(IStructuresCalculation calculation)
         {