anchor.diff:  open NUnit.Framework
   open Projekt.Util
   open FsUnit
  -
  -let runningOnMono = try System.Type.GetType("Mono.Runtime") <> null with e -> false
   
   let assertDeepEquals expected result =
     Assert.IsTrue (XNode.DeepEquals(expected, result),
  
positive.code:     <AssemblyName>Test</AssemblyName>
      <Name>Test</Name>
    </PropertyGroup>
      """
      + emptyItemGroup +
      """
      </Project>
      """
  
  [<Test>]
  
negative.code: """
  
  let delExpected =
      """<?xml version="1.0" encoding="utf-8"?>
  <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
    <PropertyGroup>
  