Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/Factories/MacroStabilityInwardsChartDataPointsFactory.cs
===================================================================
diff -u -r5007be256ef2923a6aecbc2639b1e80f38f45539 -rc49912c9ead51b6796adc0145256d9f22205e880
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/Factories/MacroStabilityInwardsChartDataPointsFactory.cs	(.../MacroStabilityInwardsChartDataPointsFactory.cs)	(revision 5007be256ef2923a6aecbc2639b1e80f38f45539)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/Factories/MacroStabilityInwardsChartDataPointsFactory.cs	(.../MacroStabilityInwardsChartDataPointsFactory.cs)	(revision c49912c9ead51b6796adc0145256d9f22205e880)
@@ -307,7 +307,19 @@
         /// </summary>
         /// <param name="grid">The grid to create the grid points for.</param>
         /// <param name="gridDeterminationType">The grid determination type.</param>
-        /// <returns></returns>
+        /// <returns>An array of interpolated points in 2D space based on the provided 
+        /// <paramref name="grid"/> or an empty array when:
+        /// <list type="bullet">
+        /// <item><paramref name="grid"/> is <c>null</c>;</item>
+        /// <item><paramref name="gridDeterminationType"/> is <see cref="MacroStabilityInwardsGridDeterminationType.Automatic"/>;</item>
+        /// <item>the grid settings are invalid:
+        /// <list type="bullet">
+        /// <item>the grid boundaries are <see cref="double.NaN"/>;</item>
+        /// <item>the number of horizontal or vertical points are not greater than zero.</item>
+        /// </list>
+        /// </item>
+        /// </list>
+        /// </returns>
         public static Point2D[] CreateGridPoints(MacroStabilityInwardsGrid grid, MacroStabilityInwardsGridDeterminationType gridDeterminationType)
         {
             if (grid == null