Added XML comments where appropriate

PKM/PKMConverter.cs

@@ -58,7 +58,14 @@ public static int getPKMDataFormat(byte[] data)
             }
             return -1;
         }
-        internal static PKM getPKMfromBytes(byte[] data, string ident = null)
+
+        /// <summary>
+        /// Creates an instance of <see cref="PKM"/> from the given data.
+        /// </summary>
+        /// <param name="data">Raw data of the Pokemon file.</param>
+        /// <param name="ident">Optional identifier for the Pokemon.  Usually the full path of the source file.</param>
+        /// <returns>An instance of <see cref="PKM"/> created from the given <paramref name="data"/>, or null if <paramref name="data"/> is invalid.</returns>
+        public static PKM getPKMfromBytes(byte[] data, string ident = null)
         {
             checkEncrypted(ref data);
             switch (getPKMDataFormat(data))

PKM/PKX.cs

@@ -25,6 +25,11 @@ public static class PKX
         internal const int SIZE_6STORED = 0xE8;
         internal const int SIZE_6BLOCK = 56;
 
+        /// <summary>
+        /// Determines if the given length is valid for a Pokemon file.
+        /// </summary>
+        /// <param name="len">Length of the data to check.</param>
+        /// <returns>A boolean indicating whether or not the length is valid for a Pokemon file.</returns>
         public static bool getIsPKM(long len)
         {
             return new[] {SIZE_3STORED, SIZE_3PARTY, SIZE_4STORED, SIZE_4PARTY, SIZE_5PARTY, SIZE_6STORED, SIZE_6PARTY}.Contains((int)len);