Index: Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/FaultTreeIllustrationPointChildProperty.cs
===================================================================
diff -u -rb4d70f02478eef8064cdfb381f99fc2b14e69343 -rb2228e683427f65ddc438ce86a0ab53ca07ed3b5
--- Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/FaultTreeIllustrationPointChildProperty.cs	(.../FaultTreeIllustrationPointChildProperty.cs)	(revision b4d70f02478eef8064cdfb381f99fc2b14e69343)
+++ Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/FaultTreeIllustrationPointChildProperty.cs	(.../FaultTreeIllustrationPointChildProperty.cs)	(revision b2228e683427f65ddc438ce86a0ab53ca07ed3b5)
@@ -37,17 +37,18 @@
     public class FaultTreeIllustrationPointChildProperty : IllustrationPointChildProperty
     {
         /// <summary>
-        /// Creates a new instance of <see cref="IllustrationPointProperty"/>.
+        /// Creates a new instance of <see cref="FaultTreeIllustrationPointChildProperty"/>.
         /// </summary>
-        /// <param name="faultTreeData">The data to use for the properties. </param>
+        /// <param name="illustrationPointNode">The data to use for the properties. </param>
         /// <param name="windDirection">String containing the wind direction for this illustration point</param>
-        /// <exception cref="ArgumentNullException">Thrown when any input parameter is <c>null</c> or when faultTreeData is of the wrong type.</exception>
+        /// <exception cref="ArgumentNullException">Thrown when any input parameter is <c>null</c> or when illustrationPointNode is of the wrong type.</exception>
+        /// <exception cref="ArgumentException">Thrown when the illustration point node is not of type <see cref="FaultTreeIllustrationPoint"/></exception>
         public FaultTreeIllustrationPointChildProperty(
-            IllustrationPointNode faultTreeData, string windDirection) : base(faultTreeData, windDirection)
+            IllustrationPointNode illustrationPointNode, string windDirection) : base(illustrationPointNode, windDirection)
         {
             if (!(data.Data is FaultTreeIllustrationPoint))
             {
-                throw new ArgumentException("IllustrationPoint data type has to be FaultTreeIllustrationPoint");
+                throw new ArgumentException("illustrationPointNode data type has to be FaultTreeIllustrationPoint");
             }
         }
 
Index: Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/IllustrationPointChildProperty.cs
===================================================================
diff -u -reea09a6357b41d9773a802b22f921817fda018ef -rb2228e683427f65ddc438ce86a0ab53ca07ed3b5
--- Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/IllustrationPointChildProperty.cs	(.../IllustrationPointChildProperty.cs)	(revision eea09a6357b41d9773a802b22f921817fda018ef)
+++ Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/IllustrationPointChildProperty.cs	(.../IllustrationPointChildProperty.cs)	(revision b2228e683427f65ddc438ce86a0ab53ca07ed3b5)
@@ -39,23 +39,23 @@
     public class IllustrationPointChildProperty : ObjectProperties<IllustrationPointNode>
     {
         /// <summary>
-        /// Creates a new instance of <see cref="IllustrationPointProperty"/>.
+        /// Creates a new instance of <see cref="IllustrationPointChildProperty"/>.
         /// </summary>
-        /// <param name="faultTreeData">The data to use for the properties. </param>
+        /// <param name="illustrationPointNode">The data to use for the properties. </param>
         /// <param name="windDirection">String containing the wind direction for this illustration point</param>
         /// <exception cref="ArgumentNullException">Thrown when any input parameter is <c>null</c>.</exception>
         public IllustrationPointChildProperty(
-            IllustrationPointNode faultTreeData, string windDirection)
+            IllustrationPointNode illustrationPointNode, string windDirection)
         {
-            if (faultTreeData == null)
+            if (illustrationPointNode == null)
             {
-                throw new ArgumentNullException(nameof(faultTreeData));
+                throw new ArgumentNullException(nameof(illustrationPointNode));
             }
             if (windDirection == null)
             {
                 throw new ArgumentNullException(nameof(windDirection));
             }
-            data = faultTreeData;
+            data = illustrationPointNode;
             WindDirection = windDirection;
         }
 
Index: Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/StructuresOutputProperties.cs
===================================================================
diff -u -reea09a6357b41d9773a802b22f921817fda018ef -rb2228e683427f65ddc438ce86a0ab53ca07ed3b5
--- Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/StructuresOutputProperties.cs	(.../StructuresOutputProperties.cs)	(revision eea09a6357b41d9773a802b22f921817fda018ef)
+++ Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/StructuresOutputProperties.cs	(.../StructuresOutputProperties.cs)	(revision b2228e683427f65ddc438ce86a0ab53ca07ed3b5)
@@ -20,6 +20,7 @@
 // All rights reserved.
 
 using System;
+using System.Collections.Generic;
 using System.ComponentModel;
 using System.Linq;
 using Core.Common.Base.Data;
@@ -74,7 +75,7 @@
         [ResourcesDescription(typeof(Resources), nameof(Resources.HydraulicBoundaryDatabase_AlphaValues_Description))]
         [TypeConverter(typeof(KeyValueExpandableArrayConverter))]
         [KeyValueElement(nameof(Stochast.Name), nameof(Stochast.Alpha))]
-        public Stochast[] AlphaValues
+        public IEnumerable<Stochast> AlphaValues
         {
             get
             {
@@ -89,7 +90,7 @@
         [ResourcesDescription(typeof(Resources), nameof(Resources.HydraulicBoundaryDatabase_Durations_Description))]
         [TypeConverter(typeof(KeyValueExpandableArrayConverter))]
         [KeyValueElement(nameof(Stochast.Name), nameof(Stochast.Duration))]
-        public Stochast[] Durations
+        public IEnumerable<Stochast> Durations
         {
             get
             {
Index: Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/SubMechanismIllustrationPointChildProperty.cs
===================================================================
diff -u -rb4d70f02478eef8064cdfb381f99fc2b14e69343 -rb2228e683427f65ddc438ce86a0ab53ca07ed3b5
--- Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/SubMechanismIllustrationPointChildProperty.cs	(.../SubMechanismIllustrationPointChildProperty.cs)	(revision b4d70f02478eef8064cdfb381f99fc2b14e69343)
+++ Ringtoets/Common/src/Ringtoets.Common.Forms/PropertyClasses/SubMechanismIllustrationPointChildProperty.cs	(.../SubMechanismIllustrationPointChildProperty.cs)	(revision b2228e683427f65ddc438ce86a0ab53ca07ed3b5)
@@ -37,17 +37,18 @@
     public class SubMechanismIllustrationPointChildProperty : IllustrationPointChildProperty
     {
         /// <summary>
-        /// Creates a new instance of <see cref="IllustrationPointProperty"/>.
+        /// Creates a new instance of <see cref="SubMechanismIllustrationPointChildProperty"/>.
         /// </summary>
-        /// <param name="faultTreeData">The data to use for the properties. </param>
+        /// <param name="illustrationPointNode">The data to use for the properties. </param>
         /// <param name="windDirection">String containing the wind direction for this illustration point</param>
         /// <exception cref="ArgumentNullException">Thrown when any input parameter is <c>null</c>.</exception>
+        /// <exception cref="ArgumentException">Thrown when the illustration point node is not of type <see cref="SubMechanismIllustrationPoint"/></exception>
         public SubMechanismIllustrationPointChildProperty(
-            IllustrationPointNode faultTreeData, string windDirection) : base(faultTreeData, windDirection)
+            IllustrationPointNode illustrationPointNode, string windDirection) : base(illustrationPointNode, windDirection)
         {
             if (!(data.Data is SubMechanismIllustrationPoint))
             {
-                throw new ArgumentException("IllustrationPoint data type has to be SubMechanismIllustrationPoint");
+                throw new ArgumentException("illustrationPointNode data type has to be SubMechanismIllustrationPoint");
             }
         }
 
Index: Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/FaultTreeIllustrationPointChildPropertyTest.cs
===================================================================
diff -u -reea09a6357b41d9773a802b22f921817fda018ef -rb2228e683427f65ddc438ce86a0ab53ca07ed3b5
--- Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/FaultTreeIllustrationPointChildPropertyTest.cs	(.../FaultTreeIllustrationPointChildPropertyTest.cs)	(revision eea09a6357b41d9773a802b22f921817fda018ef)
+++ Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/FaultTreeIllustrationPointChildPropertyTest.cs	(.../FaultTreeIllustrationPointChildPropertyTest.cs)	(revision b2228e683427f65ddc438ce86a0ab53ca07ed3b5)
@@ -36,7 +36,7 @@
         public void Constructor_InvalidIllustrationPointType_ThrowsException()
         {
             // Setup
-            const string expectedMessage = "IllustrationPoint data type has to be FaultTreeIllustrationPoint";
+            const string expectedMessage = "illustrationPointNode data type has to be FaultTreeIllustrationPoint";
 
             // Call
             TestDelegate test = () => new FaultTreeIllustrationPointChildProperty(new IllustrationPointNode(new TestSubMechanismIllustrationPoint()), "N");
Index: Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/SubMechanismIllustrationPointChildPropertyTest.cs
===================================================================
diff -u -r83c091ef77a14dc5b4116c628876f49243544aba -rb2228e683427f65ddc438ce86a0ab53ca07ed3b5
--- Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/SubMechanismIllustrationPointChildPropertyTest.cs	(.../SubMechanismIllustrationPointChildPropertyTest.cs)	(revision 83c091ef77a14dc5b4116c628876f49243544aba)
+++ Ringtoets/Common/test/Ringtoets.Common.Forms.Test/PropertyClasses/SubMechanismIllustrationPointChildPropertyTest.cs	(.../SubMechanismIllustrationPointChildPropertyTest.cs)	(revision b2228e683427f65ddc438ce86a0ab53ca07ed3b5)
@@ -35,7 +35,7 @@
         public void Constructor_InvalidIllustrationPointType_ThrowsException()
         {
             // Setup
-            const string expectedMessage = "IllustrationPoint data type has to be SubMechanismIllustrationPoint";
+            const string expectedMessage = "illustrationPointNode data type has to be SubMechanismIllustrationPoint";
 
             // Call
             TestDelegate test = () => new SubMechanismIllustrationPointChildProperty(new IllustrationPointNode(