diff --git a/Utilities/ByteUtils/ByteWriter.cs b/Utilities/ByteUtils/ByteWriter.cs
index 0de2a41..54715b3 100644
--- a/Utilities/ByteUtils/ByteWriter.cs
+++ b/Utilities/ByteUtils/ByteWriter.cs
@@ -134,10 +134,22 @@ namespace Utilities
             }
         }
 
+        public static void WriteUTF8String(Stream stream, string value)
+        {
+            byte[] bytes = UnicodeEncoding.UTF8.GetBytes(value);
+            stream.Write(bytes, 0, bytes.Length);
+        }
+
         public static void WriteUTF16String(Stream stream, string value)
         {
             byte[] bytes = UnicodeEncoding.Unicode.GetBytes(value);
             stream.Write(bytes, 0, bytes.Length);
         }
+
+        public static void WriteUTF16BEString(Stream stream, string value)
+        {
+            byte[] bytes = UnicodeEncoding.BigEndianUnicode.GetBytes(value);
+            stream.Write(bytes, 0, bytes.Length);
+        }
     }
 }
diff --git a/Utilities/Generics/KeyValuePairList.cs b/Utilities/Generics/KeyValuePairList.cs
index 093c6e1..fc5f093 100644
--- a/Utilities/Generics/KeyValuePairList.cs
+++ b/Utilities/Generics/KeyValuePairList.cs
@@ -6,6 +6,14 @@ namespace Utilities
 {
     public partial class KeyValuePairList<TKey, TValue> : List<KeyValuePair<TKey, TValue>>
     {
+        public KeyValuePairList()
+        {
+        }
+
+        public KeyValuePairList(List<KeyValuePair<TKey, TValue>> collection) : base(collection)
+        {
+        }
+
         public bool ContainsKey(TKey key)
         {
             return (this.IndexOfKey(key) != -1);
@@ -97,5 +105,10 @@ namespace Utilities
                 return comparer.Compare(a.Key, b.Key);
             });
         }
+
+        public new KeyValuePairList<TKey, TValue> GetRange(int index, int count)
+        {
+            return new KeyValuePairList<TKey, TValue>(base.GetRange(index, count));
+        }
     }
 }
diff --git a/Utilities/Generics/Map.cs b/Utilities/Generics/Map.cs
index 5a83dc5..98f0c34 100644
--- a/Utilities/Generics/Map.cs
+++ b/Utilities/Generics/Map.cs
@@ -35,6 +35,36 @@ namespace Utilities
             return m_reverse.ContainsKey(value);
         }
 
+        public bool TryGetKey(T2 value, out T1 key)
+        {
+            return m_reverse.TryGetValue(value, out key);
+        }
+
+        public bool TryGetValue(T1 key, out T2 value)
+        {
+            return m_forward.TryGetValue(key, out value);
+        }
+
+        public void RemoveKey(T1 key)
+        {
+            T2 value;
+            if (m_forward.TryGetValue(key, out value))
+            {
+                m_forward.Remove(key);
+                m_reverse.Remove(value);
+            }
+        }
+
+        public void RemoveValue(T2 value)
+        {
+            T1 key;
+            if (m_reverse.TryGetValue(value, out key))
+            {
+                m_forward.Remove(key);
+                m_reverse.Remove(value);
+            }
+        }
+
         public T2 this[T1 key]
         {
             get
diff --git a/Utilities/Generics/SortedList.cs b/Utilities/Generics/SortedList.cs
index b8d5f2d..492b431 100644
--- a/Utilities/Generics/SortedList.cs
+++ b/Utilities/Generics/SortedList.cs
@@ -105,15 +105,25 @@ namespace Utilities
 
         public static int FirstIndexOf(List<T> list, Comparer<T> comparer, T item)
         {
-            int insertIndex = FindIndexForSortedInsert(list, comparer, item);
+            return FirstIndexOf(list, comparer.Compare, item);
+        }
+
+        public static int FindIndexForSortedInsert(List<T> list, Comparer<T> comparer, T item)
+        {
+            return FindIndexForSortedInsert(list, comparer.Compare, item);
+        }
+
+        public static int FirstIndexOf(List<T> list, Comparison<T> compare, T item)
+        {
+            int insertIndex = FindIndexForSortedInsert(list, compare, item);
             if (insertIndex == list.Count)
             {
                 return -1;
             }
-            if (comparer.Compare(item, list[insertIndex]) == 0)
+            if (compare(item, list[insertIndex]) == 0)
             {
                 int index = insertIndex;
-                while (index > 0 && comparer.Compare(item, list[index - 1]) == 0)
+                while (index > 0 && compare(item, list[index - 1]) == 0)
                 {
                     index--;
                 }
@@ -122,7 +132,7 @@ namespace Utilities
             return -1;
         }
 
-        public static int FindIndexForSortedInsert(List<T> list, Comparer<T> comparer, T item)
+        public static int FindIndexForSortedInsert(List<T> list, Comparison<T> compare, T item)
         {
             if (list.Count == 0)
             {
@@ -136,7 +146,7 @@ namespace Utilities
             {
                 int middleIndex = (lowerIndex + upperIndex) / 2;
                 T middle = list[middleIndex];
-                comparisonResult = comparer.Compare(middle, item);
+                comparisonResult = compare(middle, item);
                 if (comparisonResult == 0)
                 {
                     return middleIndex;
@@ -154,7 +164,7 @@ namespace Utilities
             // At this point any entry following 'middle' is greater than 'item',
             // and any entry preceding 'middle' is lesser than 'item'.
             // So we either put 'item' before or after 'middle'.
-            comparisonResult = comparer.Compare(list[lowerIndex], item);
+            comparisonResult = compare(list[lowerIndex], item);
             if (comparisonResult < 0) // middle < item
             {
                 return lowerIndex + 1;
diff --git a/Utilities/IFileSystem/FileSystem.cs b/Utilities/IFileSystem/FileSystem.cs
index c31231a..1245005 100644
--- a/Utilities/IFileSystem/FileSystem.cs
+++ b/Utilities/IFileSystem/FileSystem.cs
@@ -74,6 +74,11 @@ namespace Utilities
             get;
         }
 
+        public abstract bool SupportsNamedStreams
+        {
+            get;
+        }
+
         public static string GetParentDirectory(string path)
         {
             if (path == String.Empty)
diff --git a/Utilities/IFileSystem/IFileSystem.cs b/Utilities/IFileSystem/IFileSystem.cs
index c1f99eb..9894ce8 100644
--- a/Utilities/IFileSystem/IFileSystem.cs
+++ b/Utilities/IFileSystem/IFileSystem.cs
@@ -78,5 +78,14 @@ namespace Utilities
         {
             get;
         }
+
+        /// <summary>
+        /// Indicates support for opening named streams (alternate data streams).
+        /// Named streams are opened using the filename:stream syntax.
+        /// </summary>
+        bool SupportsNamedStreams
+        {
+            get;
+        }
     }
 }