Converted tabs to spaces.

Source/OpenTK/Math/Matrix4d.cs

@@ -245,38 +245,38 @@ namespace OpenTK
 
         #endregion
 
-		#region Indexers
+        #region Indexers
 
-		/// <summary>
-		/// Gets or sets the value at a specified row and column.
-		/// </summary>
-		public double this[int rowIndex, int columnIndex]
-		{
-			get
-			{
-				if (rowIndex == 0) return Row0[columnIndex];
-				else if (rowIndex == 1) return Row1[columnIndex];
-				else if (rowIndex == 2) return Row2[columnIndex];
-				else if (rowIndex == 3) return Row3[columnIndex];
-				throw new IndexOutOfRangeException("You tried to access this matrix at: (" + rowIndex + ", " + columnIndex + ")");
-			}
-			set
-			{
-				if (rowIndex == 0) Row0[columnIndex] = value;
-				else if (rowIndex == 1) Row1[columnIndex] = value;
-				else if (rowIndex == 2) Row2[columnIndex] = value;
-				else if (rowIndex == 3) Row3[columnIndex] = value;
-				throw new IndexOutOfRangeException("You tried to set this matrix at: (" + rowIndex + ", " + columnIndex + ")");
-			}
-		}
+        /// <summary>
+        /// Gets or sets the value at a specified row and column.
+        /// </summary>
+        public double this[int rowIndex, int columnIndex]
+        {
+            get
+            {
+                if (rowIndex == 0) return Row0[columnIndex];
+                else if (rowIndex == 1) return Row1[columnIndex];
+                else if (rowIndex == 2) return Row2[columnIndex];
+                else if (rowIndex == 3) return Row3[columnIndex];
+                throw new IndexOutOfRangeException("You tried to access this matrix at: (" + rowIndex + ", " + columnIndex + ")");
+            }
+            set
+            {
+                if (rowIndex == 0) Row0[columnIndex] = value;
+                else if (rowIndex == 1) Row1[columnIndex] = value;
+                else if (rowIndex == 2) Row2[columnIndex] = value;
+                else if (rowIndex == 3) Row3[columnIndex] = value;
+                throw new IndexOutOfRangeException("You tried to set this matrix at: (" + rowIndex + ", " + columnIndex + ")");
+            }
+        }
 
-		#endregion
+        #endregion
 
-		#region Instance
+        #region Instance
 
-		#region public void Invert()
+        #region public void Invert()
 
-		/// <summary>
+        /// <summary>
         /// Converts this instance into its inverse.
         /// </summary>
         public void Invert()