Index: Ringtoets/Piping/src/Ringtoets.Piping.Forms/PipingSurfaceLineSelectionDialog.cs
===================================================================
diff -u -rbff183a6d323111affe69f3afa19b9ada02c9375 -re473fe41d29060803b0d8f560a48ec8b9618bea4
--- Ringtoets/Piping/src/Ringtoets.Piping.Forms/PipingSurfaceLineSelectionDialog.cs	(.../PipingSurfaceLineSelectionDialog.cs)	(revision bff183a6d323111affe69f3afa19b9ada02c9375)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Forms/PipingSurfaceLineSelectionDialog.cs	(.../PipingSurfaceLineSelectionDialog.cs)	(revision e473fe41d29060803b0d8f560a48ec8b9618bea4)
@@ -8,10 +8,19 @@
 
 namespace Ringtoets.Piping.Forms
 {
+    /// <summary>
+    /// A dialog which allows the user to make a selection form a given set of <see cref="RingtoetsPipingSurfaceLine"/>. Upon
+    /// closing of the dialog, the selected <see cref="RingtoetsPipingSurfaceLine"/> can be obtained.
+    /// </summary>
     public partial class PipingSurfaceLineSelectionDialog : DialogBase
     {
+        /// <summary>
+        /// Creates a new instance of <see cref="PipingSurfaceLineSelectionDialog"/>.
+        /// </summary>
+        /// <param name="dialogParent">The parent of the dialog.</param>
+        /// <param name="surfaceLines">The collection of <see cref="RingtoetsPipingSurfaceLine"/> to show in the dialog.</param>
         public PipingSurfaceLineSelectionDialog(IWin32Window dialogParent, IEnumerable<RingtoetsPipingSurfaceLine> surfaceLines)
-            : base(dialogParent, Resources.GeneratePipingCalculationsIcon, 300, 600)
+            : base(dialogParent, Resources.GeneratePipingCalculationsIcon, 300, 400)
         {
             InitializeComponent();
 
@@ -20,17 +29,23 @@
                 Dock = DockStyle.Fill
             };
             Controls.Add(PipingSurfaceLineSelectionView);
+            SelectedSurfaceLines = new List<RingtoetsPipingSurfaceLine>();
         }
 
-        private PipingSurfaceLineSelectionView PipingSurfaceLineSelectionView { get; set; }
+        /// <summary>
+        /// Gets a collection of selected <see cref="RingtoetsPipingSurfaceLine"/> if they were selected
+        /// in the dialog and a confirmation was given. If no confirmation was given or no 
+        /// <see cref="RingtoetsPipingSurfaceLine"/> was selected, then an empty collection is returned.
+        /// </summary>
+        public IEnumerable<RingtoetsPipingSurfaceLine> SelectedSurfaceLines { get; private set; }
 
-        public IEnumerable<RingtoetsPipingSurfaceLine> SelectedSurfaceLines { get; set; }
-
         protected override Button GetCancelButton()
         {
             return CancelButton;
         }
 
+        private PipingSurfaceLineSelectionView PipingSurfaceLineSelectionView { get; set; }
+
         private void OkButtonOnClick(object sender, EventArgs e)
         {
             SelectedSurfaceLines = PipingSurfaceLineSelectionView.GetSelectedSurfaceLines();
@@ -39,7 +54,6 @@
 
         private void CancelButtonOnClick(object sender, EventArgs eventArgs)
         {
-            SelectedSurfaceLines = new List<RingtoetsPipingSurfaceLine>();
             Close();
         }
     }