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diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Utils/ExtensionMethods.cs b/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Utils/ExtensionMethods.cs
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+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Media;
+using System.Xml;
+
+namespace Tango.Scripting.Editors.Utils
+{
+	static class ExtensionMethods
+	{
+		#region Epsilon / IsClose / CoerceValue
+		/// <summary>
+		/// Epsilon used for <c>IsClose()</c> implementations.
+		/// We can use up quite a few digits in front of the decimal point (due to visual positions being relative to document origin),
+		/// and there's no need to be too accurate (we're dealing with pixels here),
+		/// so we will use the value 0.01.
+		/// Previosly we used 1e-8 but that was causing issues:
+		/// http://community.sharpdevelop.net/forums/t/16048.aspx
+		/// </summary>
+		public const double Epsilon = 0.01;
+		
+		/// <summary>
+		/// Returns true if the doubles are close (difference smaller than 0.01).
+		/// </summary>
+		public static bool IsClose(this double d1, double d2)
+		{
+			if (d1 == d2) // required for infinities
+				return true;
+			return Math.Abs(d1 - d2) < Epsilon;
+		}
+		
+		/// <summary>
+		/// Returns true if the doubles are close (difference smaller than 0.01).
+		/// </summary>
+		public static bool IsClose(this Size d1, Size d2)
+		{
+			return IsClose(d1.Width, d2.Width) && IsClose(d1.Height, d2.Height);
+		}
+		
+		/// <summary>
+		/// Returns true if the doubles are close (difference smaller than 0.01).
+		/// </summary>
+		public static bool IsClose(this Vector d1, Vector d2)
+		{
+			return IsClose(d1.X, d2.X) && IsClose(d1.Y, d2.Y);
+		}
+		
+		/// <summary>
+		/// Forces the value to stay between mininum and maximum.
+		/// </summary>
+		/// <returns>minimum, if value is less than minimum.
+		/// Maximum, if value is greater than maximum.
+		/// Otherwise, value.</returns>
+		public static double CoerceValue(this double value, double minimum, double maximum)
+		{
+			return Math.Max(Math.Min(value, maximum), minimum);
+		}
+		
+		/// <summary>
+		/// Forces the value to stay between mininum and maximum.
+		/// </summary>
+		/// <returns>minimum, if value is less than minimum.
+		/// Maximum, if value is greater than maximum.
+		/// Otherwise, value.</returns>
+		public static int CoerceValue(this int value, int minimum, int maximum)
+		{
+			return Math.Max(Math.Min(value, maximum), minimum);
+		}
+		#endregion
+		
+		#region CreateTypeface
+		/// <summary>
+		/// Creates typeface from the framework element.
+		/// </summary>
+		public static Typeface CreateTypeface(this FrameworkElement fe)
+		{
+			return new Typeface((FontFamily)fe.GetValue(TextBlock.FontFamilyProperty),
+			                    (FontStyle)fe.GetValue(TextBlock.FontStyleProperty),
+			                    (FontWeight)fe.GetValue(TextBlock.FontWeightProperty),
+			                    (FontStretch)fe.GetValue(TextBlock.FontStretchProperty));
+		}
+		#endregion
+		
+		#region AddRange / Sequence
+		public static void AddRange<T>(this ICollection<T> collection, IEnumerable<T> elements)
+		{
+			foreach (T e in elements)
+				collection.Add(e);
+		}
+		
+		/// <summary>
+		/// Creates an IEnumerable with a single value.
+		/// </summary>
+		public static IEnumerable<T> Sequence<T>(T value)
+		{
+			yield return value;
+		}
+		#endregion
+		
+		#region XML reading
+		/// <summary>
+		/// Gets the value of the attribute, or null if the attribute does not exist.
+		/// </summary>
+		public static string GetAttributeOrNull(this XmlElement element, string attributeName)
+		{
+			XmlAttribute attr = element.GetAttributeNode(attributeName);
+			return attr != null ? attr.Value : null;
+		}
+		
+		/// <summary>
+		/// Gets the value of the attribute as boolean, or null if the attribute does not exist.
+		/// </summary>
+		public static bool? GetBoolAttribute(this XmlElement element, string attributeName)
+		{
+			XmlAttribute attr = element.GetAttributeNode(attributeName);
+			return attr != null ? (bool?)XmlConvert.ToBoolean(attr.Value) : null;
+		}
+		
+		/// <summary>
+		/// Gets the value of the attribute as boolean, or null if the attribute does not exist.
+		/// </summary>
+		public static bool? GetBoolAttribute(this XmlReader reader, string attributeName)
+		{
+			string attributeValue = reader.GetAttribute(attributeName);
+			if (attributeValue == null)
+				return null;
+			else
+				return XmlConvert.ToBoolean(attributeValue);
+		}
+		#endregion
+		
+		#region DPI independence
+		public static Rect TransformToDevice(this Rect rect, Visual visual)
+		{
+			Matrix matrix = PresentationSource.FromVisual(visual).CompositionTarget.TransformToDevice;
+			return Rect.Transform(rect, matrix);
+		}
+		
+		public static Rect TransformFromDevice(this Rect rect, Visual visual)
+		{
+			Matrix matrix = PresentationSource.FromVisual(visual).CompositionTarget.TransformFromDevice;
+			return Rect.Transform(rect, matrix);
+		}
+		
+		public static Size TransformToDevice(this Size size, Visual visual)
+		{
+			Matrix matrix = PresentationSource.FromVisual(visual).CompositionTarget.TransformToDevice;
+			return new Size(size.Width * matrix.M11, size.Height * matrix.M22);
+		}
+		
+		public static Size TransformFromDevice(this Size size, Visual visual)
+		{
+			Matrix matrix = PresentationSource.FromVisual(visual).CompositionTarget.TransformFromDevice;
+			return new Size(size.Width * matrix.M11, size.Height * matrix.M22);
+		}
+		
+		public static Point TransformToDevice(this Point point, Visual visual)
+		{
+			Matrix matrix = PresentationSource.FromVisual(visual).CompositionTarget.TransformToDevice;
+			return new Point(point.X * matrix.M11, point.Y * matrix.M22);
+		}
+		
+		public static Point TransformFromDevice(this Point point, Visual visual)
+		{
+			Matrix matrix = PresentationSource.FromVisual(visual).CompositionTarget.TransformFromDevice;
+			return new Point(point.X * matrix.M11, point.Y * matrix.M22);
+		}
+		#endregion
+		
+		#region System.Drawing <-> WPF conversions
+		public static System.Drawing.Point ToSystemDrawing(this Point p)
+		{
+			return new System.Drawing.Point((int)p.X, (int)p.Y);
+		}
+		
+		public static Point ToWpf(this System.Drawing.Point p)
+		{
+			return new Point(p.X, p.Y);
+		}
+		
+		public static Size ToWpf(this System.Drawing.Size s)
+		{
+			return new Size(s.Width, s.Height);
+		}
+		
+		public static Rect ToWpf(this System.Drawing.Rectangle rect)
+		{
+			return new Rect(rect.Location.ToWpf(), rect.Size.ToWpf());
+		}
+		#endregion
+		
+		[Conditional("DEBUG")]
+		public static void CheckIsFrozen(Freezable f)
+		{
+			if (f != null && !f.IsFrozen)
+				Debug.WriteLine("Performance warning: Not frozen: " + f.ToString());
+		}
+		
+		[Conditional("DEBUG")]
+		public static void Log(bool condition, string format, params object[] args)
+		{
+			if (condition) {
+				string output = DateTime.Now.ToString("hh:MM:ss") + ": " + string.Format(format, args) + Environment.NewLine + Environment.StackTrace;
+				Console.WriteLine(output);
+				Debug.WriteLine(output);
+			}
+		}
+	}
+}