Some comments

MapControl/Shared/BoundingBox.cs

@@ -44,6 +44,9 @@ namespace MapControl
 
         public virtual Location Center => new Location((South + North) / 2d, (West + East) / 2d);
 
+        /// <summary>
+        /// Creates a BoundingBox instance from a string containing a comma-separated sequence of four floating point numbers.
+        /// </summary>
         public static BoundingBox Parse(string boundingBox)
         {
             string[] values = null;
@@ -55,7 +58,7 @@ namespace MapControl
 
             if (values?.Length != 4)
             {
-                throw new FormatException("BoundingBox string must be a comma-separated list of four floating point numbers.");
+                throw new FormatException("BoundingBox string must contain a comma-separated sequence of four floating point numbers.");
             }
 
             return new BoundingBox(

MapControl/Shared/Location.cs

@@ -52,6 +52,9 @@ namespace MapControl
             return string.Format(CultureInfo.InvariantCulture, "{0:F5},{1:F5}", Latitude, Longitude);
         }
 
+        /// <summary>
+        /// Creates a Location instance from a string containing a comma-separated pair of floating point numbers.
+        /// </summary>
         public static Location Parse(string location)
         {
             string[] values = null;
@@ -63,7 +66,7 @@ namespace MapControl
 
             if (values?.Length != 2)
             {
-                throw new FormatException("Location string must be a comma-separated pair of floating point numbers.");
+                throw new FormatException("Location string must contain a comma-separated pair of floating point numbers.");
             }
 
             return new Location(

MapControl/Shared/LocationCollection.cs

@@ -52,6 +52,10 @@ namespace MapControl
             Add(new Location(latitude, longitude));
         }
 
+        /// <summary>
+        /// Creates a LocationCollection instance from a string containing a sequence
+        /// of Location strings that are separated by a spaces or semicolons.
+        /// </summary>
         public static LocationCollection Parse(string locations)
         {
             if (string.IsNullOrEmpty(locations))

MapControl/Shared/TileSource.cs

@@ -84,6 +84,9 @@ namespace MapControl
             return uri != null ? ImageLoader.LoadImageAsync(uri) : Task.FromResult((ImageSource)null);
         }
 
+        /// <summary>
+        /// Creates a TileSource instance from an Uri template string.
+        /// </summary>
         public static TileSource Parse(string uriTemplate)
         {
             return new TileSource { UriTemplate = uriTemplate };

MapControl/Shared/WmsImageLayer.cs

@@ -67,7 +67,7 @@ namespace MapControl
         }
 
         /// <summary>
-        /// Comma-separated list of Layer names to be displayed. If not set, the first Layer is displayed.
+        /// Comma-separated sequence of Layer names to be displayed. If not set, the first Layer is displayed.
         /// </summary>
         public string Layers
         {
@@ -76,7 +76,7 @@ namespace MapControl
         }
 
         /// <summary>
-        /// Comma-separated list of requested styles. Default is an empty string.
+        /// Comma-separated sequence of requested styles. Default is an empty string.
         /// </summary>
         public string Styles
         {