Index: System.Data.SQLite/SQLiteTransaction.cs
==================================================================
--- System.Data.SQLite/SQLiteTransaction.cs
+++ System.Data.SQLite/SQLiteTransaction.cs
@@ -10,21 +10,33 @@
     using System;
     using System.Data;
     using System.Data.Common;
     using System.Threading;
 
+    ///////////////////////////////////////////////////////////////////////////////////////////////
+
     /// <summary>
     /// SQLite implementation of DbTransaction.
     /// </summary>
     public sealed class SQLiteTransaction : DbTransaction
     {
         /// <summary>
         /// The connection to which this transaction is bound
         /// </summary>
         internal SQLiteConnection _cnn;
-        internal int _version; // Matches the version of the connection
+
+        /// <summary>
+        /// Matches the version of the connection.
+        /// </summary>
+        private int _version;
+
+        /// <summary>
+        /// The isolation level for this transaction.
+        /// </summary>
         private IsolationLevel _level;
+
+        ///////////////////////////////////////////////////////////////////////////////////////////////
 
         /// <summary>
         /// Constructs the transaction object, binding it to the supplied connection
         /// </summary>
         /// <param name="connection">The connection to open a transaction on</param>
@@ -134,33 +146,41 @@
             }
             _cnn._transactionLevel--;
             _cnn = null;
         }
 
+        ///////////////////////////////////////////////////////////////////////////////////////////////
+
         /// <summary>
         /// Returns the underlying connection to which this transaction applies.
         /// </summary>
         public new SQLiteConnection Connection
         {
             get { CheckDisposed(); return _cnn; }
         }
+
+        ///////////////////////////////////////////////////////////////////////////////////////////////
 
         /// <summary>
         /// Forwards to the local Connection property
         /// </summary>
         protected override DbConnection DbConnection
         {
             get { return Connection; }
         }
 
+        ///////////////////////////////////////////////////////////////////////////////////////////////
+
         /// <summary>
         /// Gets the isolation level of the transaction.  SQLite only supports Serializable transactions.
         /// </summary>
         public override IsolationLevel IsolationLevel
         {
             get { CheckDisposed(); return _level; }
         }
+
+        ///////////////////////////////////////////////////////////////////////////////////////////////
 
         /// <summary>
         /// Rolls back the active transaction.
         /// </summary>
         public override void Rollback()
@@ -168,10 +188,12 @@
             CheckDisposed();
             SQLiteConnection.Check(_cnn);
             IsValid(true);
             IssueRollback(true);
         }
+
+        ///////////////////////////////////////////////////////////////////////////////////////////////
 
         internal void IssueRollback(bool throwError)
         {
             SQLiteConnection cnn = Interlocked.Exchange(ref _cnn, null);
 
@@ -191,10 +213,12 @@
                         throw;
                 }
                 cnn._transactionLevel = 0;
             }
         }
+
+        ///////////////////////////////////////////////////////////////////////////////////////////////
 
         internal bool IsValid(bool throwError)
         {
             if (_cnn == null)
             {