Index: Core/Components/src/Core.Components.Charting/Data/AreaData.cs
===================================================================
diff -u -r4512af7782ee31b36941bb280b54d9da2953dd71 -r0696ce6625da3aa9b4b2df7f062caa7570a7675c
--- Core/Components/src/Core.Components.Charting/Data/AreaData.cs	(.../AreaData.cs)	(revision 4512af7782ee31b36941bb280b54d9da2953dd71)
+++ Core/Components/src/Core.Components.Charting/Data/AreaData.cs	(.../AreaData.cs)	(revision 0696ce6625da3aa9b4b2df7f062caa7570a7675c)
@@ -21,7 +21,6 @@
 
 using System;
 using System.Collections.Generic;
-using System.Collections.ObjectModel;
 
 namespace Core.Components.Charting.Data
 {
@@ -33,7 +32,7 @@
         /// <summary>
         /// Creates a new instance of <see cref="AreaData"/>.
         /// </summary>
-        /// <param name="points">A <see cref="Collection{T}"/> of <see cref="Tuple{T1,T2}"/> as (X,Y) points.</param>
+        /// <param name="points">A <see cref="IEnumerable{T}"/> of <see cref="Tuple{T1,T2}"/> as (X,Y) points.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="points"/> is <c>null</c>.</exception>
         public AreaData(IEnumerable<Tuple<double, double>> points) : base(points) {}
     }
Index: Core/Components/src/Core.Components.Charting/Data/LineData.cs
===================================================================
diff -u -r4512af7782ee31b36941bb280b54d9da2953dd71 -r0696ce6625da3aa9b4b2df7f062caa7570a7675c
--- Core/Components/src/Core.Components.Charting/Data/LineData.cs	(.../LineData.cs)	(revision 4512af7782ee31b36941bb280b54d9da2953dd71)
+++ Core/Components/src/Core.Components.Charting/Data/LineData.cs	(.../LineData.cs)	(revision 0696ce6625da3aa9b4b2df7f062caa7570a7675c)
@@ -21,7 +21,6 @@
 
 using System;
 using System.Collections.Generic;
-using System.Collections.ObjectModel;
 
 namespace Core.Components.Charting.Data
 {
@@ -33,7 +32,7 @@
         /// <summary>
         /// Creates a new instance of <see cref="LineData"/>.
         /// </summary>
-        /// <param name="points">A <see cref="Collection{T}"/> of <see cref="Tuple{T1,T2}"/> as (X,Y) points.</param>
+        /// <param name="points">A <see cref="IEnumerable{T}"/> of <see cref="Tuple{T1,T2}"/> as (X,Y) points.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="points"/> is <c>null</c>.</exception>
         public LineData(IEnumerable<Tuple<double, double>> points) : base(points) {}
     }
Index: Core/Components/src/Core.Components.Charting/Data/PointBasedChartData.cs
===================================================================
diff -u -r4512af7782ee31b36941bb280b54d9da2953dd71 -r0696ce6625da3aa9b4b2df7f062caa7570a7675c
--- Core/Components/src/Core.Components.Charting/Data/PointBasedChartData.cs	(.../PointBasedChartData.cs)	(revision 4512af7782ee31b36941bb280b54d9da2953dd71)
+++ Core/Components/src/Core.Components.Charting/Data/PointBasedChartData.cs	(.../PointBasedChartData.cs)	(revision 0696ce6625da3aa9b4b2df7f062caa7570a7675c)
@@ -21,7 +21,6 @@
 
 using System;
 using System.Collections.Generic;
-using System.Collections.ObjectModel;
 using System.Linq;
 
 namespace Core.Components.Charting.Data
@@ -32,9 +31,9 @@
     public abstract class PointBasedChartData : ChartData 
     {
         /// <summary>
-        /// Creates a new instance of <see cref="PointData"/>.
+        /// Creates a new instance of <see cref="PointBasedChartData"/>.
         /// </summary>
-        /// <param name="points">A <see cref="Collection{T}"/> of <see cref="Tuple{T1,T2}"/> as (X,Y) points.</param>
+        /// <param name="points">A <see cref="IEnumerable{T}"/> of <see cref="Tuple{T1,T2}"/> as (X,Y) points.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="points"/> is <c>null</c>.</exception>
         protected PointBasedChartData(IEnumerable<Tuple<double, double>> points)
         {
@@ -48,7 +47,7 @@
         }
 
         /// <summary>
-        /// Gets or sets a value indicating whether the <see cref="ChartData"/> is visible.
+        /// Gets or sets a value indicating whether the <see cref="PointBasedChartData"/> is visible.
         /// </summary>
         public bool IsVisible { get; set; }
 
Index: Core/Components/src/Core.Components.Charting/Data/PointData.cs
===================================================================
diff -u -r4512af7782ee31b36941bb280b54d9da2953dd71 -r0696ce6625da3aa9b4b2df7f062caa7570a7675c
--- Core/Components/src/Core.Components.Charting/Data/PointData.cs	(.../PointData.cs)	(revision 4512af7782ee31b36941bb280b54d9da2953dd71)
+++ Core/Components/src/Core.Components.Charting/Data/PointData.cs	(.../PointData.cs)	(revision 0696ce6625da3aa9b4b2df7f062caa7570a7675c)
@@ -21,7 +21,6 @@
 
 using System;
 using System.Collections.Generic;
-using System.Collections.ObjectModel;
 
 namespace Core.Components.Charting.Data
 {
@@ -33,7 +32,7 @@
         /// <summary>
         /// Creates a new instance of <see cref="PointData"/>.
         /// </summary>
-        /// <param name="points">A <see cref="Collection{T}"/> of <see cref="Tuple{T1,T2}"/> as (X,Y) points.</param>
+        /// <param name="points">A <see cref="IEnumerable{T}"/> of <see cref="Tuple{T1,T2}"/> as (X,Y) points.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="points"/> is <c>null</c>.</exception>
         public PointData(IEnumerable<Tuple<double, double>> points) : base(points) {}
     }
Index: Core/Components/src/Core.Components.DotSpatial/Data/MapDataCollection.cs
===================================================================
diff -u -r4512af7782ee31b36941bb280b54d9da2953dd71 -r0696ce6625da3aa9b4b2df7f062caa7570a7675c
--- Core/Components/src/Core.Components.DotSpatial/Data/MapDataCollection.cs	(.../MapDataCollection.cs)	(revision 4512af7782ee31b36941bb280b54d9da2953dd71)
+++ Core/Components/src/Core.Components.DotSpatial/Data/MapDataCollection.cs	(.../MapDataCollection.cs)	(revision 0696ce6625da3aa9b4b2df7f062caa7570a7675c)
@@ -25,7 +25,7 @@
 namespace Core.Components.DotSpatial.Data
 {
     /// <summary>
-    /// A collection of <see cref="MapData"/>.
+    /// This class represents a collection of <see cref="MapData"/>.
     /// </summary>
     public class MapDataCollection : MapData
     {
Index: Core/Components/src/Core.Components.DotSpatial/Data/MapLineData.cs
===================================================================
diff -u -r4512af7782ee31b36941bb280b54d9da2953dd71 -r0696ce6625da3aa9b4b2df7f062caa7570a7675c
--- Core/Components/src/Core.Components.DotSpatial/Data/MapLineData.cs	(.../MapLineData.cs)	(revision 4512af7782ee31b36941bb280b54d9da2953dd71)
+++ Core/Components/src/Core.Components.DotSpatial/Data/MapLineData.cs	(.../MapLineData.cs)	(revision 0696ce6625da3aa9b4b2df7f062caa7570a7675c)
@@ -24,8 +24,16 @@
 
 namespace Core.Components.DotSpatial.Data
 {
+    /// <summary>
+    /// This class represents data in 2D space which is visible as a line.
+    /// </summary>
     public class MapLineData : PointBasedMapData
     {
+        /// <summary>
+        /// Creates a new instance of <see cref="MapLineData"/>.
+        /// </summary>
+        /// <param name="points">A <see cref="IEnumerable{T}"/> of <see cref="Tuple{T1,T2}"/> as (X,Y) points.</param>
+        /// <exception cref="ArgumentNullException">Thrown when <paramref name="points"/> is <c>null</c>.</exception>
         public MapLineData(IEnumerable<Tuple<double, double>> points) : base(points) {}
     }
 }
Index: Core/Components/src/Core.Components.DotSpatial/Data/MapPointData.cs
===================================================================
diff -u -r4512af7782ee31b36941bb280b54d9da2953dd71 -r0696ce6625da3aa9b4b2df7f062caa7570a7675c
--- Core/Components/src/Core.Components.DotSpatial/Data/MapPointData.cs	(.../MapPointData.cs)	(revision 4512af7782ee31b36941bb280b54d9da2953dd71)
+++ Core/Components/src/Core.Components.DotSpatial/Data/MapPointData.cs	(.../MapPointData.cs)	(revision 0696ce6625da3aa9b4b2df7f062caa7570a7675c)
@@ -21,20 +21,18 @@
 
 using System;
 using System.Collections.Generic;
-using System.Collections.ObjectModel;
-using System.Linq;
 
 namespace Core.Components.DotSpatial.Data
 {
     /// <summary>
-    /// A collection of points for the Map.
+    /// This class represents data in 2D space which is visible as points.
     /// </summary>
     public class MapPointData : PointBasedMapData
     {
         /// <summary>
         /// Create a new instance of <see cref="MapPointData"/>.
         /// </summary>
-        /// <param name="points">A <see cref="Collection{T}"/> of <see cref="Tuple{T1,T2}"/> as (X,Y) coordinates.</param>
+        /// <param name="points">A <see cref="IEnumerable{T}"/> of <see cref="Tuple{T1,T2}"/> as (X,Y) coordinates.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="points"/> is <c>null</c>.</exception>
         public MapPointData(IEnumerable<Tuple<double, double>> points) : base(points) {}
     }
Index: Core/Components/src/Core.Components.DotSpatial/Data/MapPolygonData.cs
===================================================================
diff -u -r4512af7782ee31b36941bb280b54d9da2953dd71 -r0696ce6625da3aa9b4b2df7f062caa7570a7675c
--- Core/Components/src/Core.Components.DotSpatial/Data/MapPolygonData.cs	(.../MapPolygonData.cs)	(revision 4512af7782ee31b36941bb280b54d9da2953dd71)
+++ Core/Components/src/Core.Components.DotSpatial/Data/MapPolygonData.cs	(.../MapPolygonData.cs)	(revision 0696ce6625da3aa9b4b2df7f062caa7570a7675c)
@@ -24,8 +24,16 @@
 
 namespace Core.Components.DotSpatial.Data
 {
+    /// <summary>
+    /// This class represents data in 2D space which forms a closed area.
+    /// </summary>
     public class MapPolygonData : PointBasedMapData
     {
+        /// <summary>
+        /// Creates a new instance of <see cref="MapPolygonData"/>.
+        /// </summary>
+        /// <param name="points">A <see cref="IEnumerable{T}"/> of <see cref="Tuple{T1,T2}"/> as (X,Y) points.</param>
+        /// <exception cref="ArgumentNullException">Thrown when <paramref name="points"/> is <c>null</c>.</exception>
         public MapPolygonData(IEnumerable<Tuple<double, double>> points) : base(points) {}
     }
 }
Index: Core/Components/src/Core.Components.DotSpatial/Data/PointBasedMapData.cs
===================================================================
diff -u -r4512af7782ee31b36941bb280b54d9da2953dd71 -r0696ce6625da3aa9b4b2df7f062caa7570a7675c
--- Core/Components/src/Core.Components.DotSpatial/Data/PointBasedMapData.cs	(.../PointBasedMapData.cs)	(revision 4512af7782ee31b36941bb280b54d9da2953dd71)
+++ Core/Components/src/Core.Components.DotSpatial/Data/PointBasedMapData.cs	(.../PointBasedMapData.cs)	(revision 0696ce6625da3aa9b4b2df7f062caa7570a7675c)
@@ -21,7 +21,6 @@
 
 using System;
 using System.Collections.Generic;
-using System.Collections.ObjectModel;
 using System.Linq;
 
 namespace Core.Components.DotSpatial.Data
@@ -32,9 +31,9 @@
     public abstract class PointBasedMapData : MapData
     {
         /// <summary>
-        /// Create a new instance of <see cref="MapPointData"/>.
+        /// Create a new instance of <see cref="PointBasedMapData"/>.
         /// </summary>
-        /// <param name="points">A <see cref="Collection{T}"/> of <see cref="Tuple{T1,T2}"/> as (X,Y) coordinates.</param>
+        /// <param name="points">A <see cref="IEnumerable{T}"/> of <see cref="Tuple{T1,T2}"/> as (X,Y) coordinates.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="points"/> is <c>null</c>.</exception>
         protected PointBasedMapData(IEnumerable<Tuple<double, double>> points)
         {
@@ -43,18 +42,17 @@
                 var message = String.Format("A point collection is required when creating a subclass of {0}.", typeof(PointBasedMapData));
                 throw new ArgumentNullException("points", message);
             }
-
             Points = points.ToArray();
             IsVisible = true;
         }
 
         /// <summary>
-        /// Gets or sets a value indicating whether the <see cref="MapPointData"/> is visible.
+        /// Gets or sets a value indicating whether the <see cref="PointBasedMapData"/> is visible.
         /// </summary>
         public bool IsVisible { get; set; }
 
         /// <summary>
-        /// Gets to collection of points in 2D space.
+        /// Gets the collection of points in 2D space.
         /// </summary>
         public IEnumerable<Tuple<double, double>> Points { get; private set; }
     }