anchor.diff:     use f = File.CreateText fn
      f.WriteLine str
   
  -let append (stringBuilder : System.Text.StringBuilder) (str : string) = stringBuilder.Append str |> ignore
  -let insert (stringBuilder : System.Text.StringBuilder) (str : string) = stringBuilder.Insert(0, str) |> ignore
  +let append (stringBuilder : StringBuilder) (str : string) = stringBuilder.Append str |> ignore
  +let insert (stringBuilder : StringBuilder) (str : string) = stringBuilder.Insert(0, str) |> ignore
   
   let transitions = new Hashtable()
   let webViews = new Hashtable()
  
positive.code: let transformXml = 
      System.IO.Directory.CreateDirectory(path + @"\res\layout") |> ignore
      System.IO.Directory.CreateDirectory(path + @"\res\drawable") |> ignore
      let newXml = new System.Text.StringBuilder()
      let reader = XmlReader.Create(path + @"\forms.xml")
      let appendXml = append newXml
      let mutable currentDepth = 0
  
negative.code:     // imports register
      let imports = new Dictionary<_,_>()
  
      let currentImports = new StringBuilder()
      append currentImports <| "\nimport android.app.Activity;
  import android.os.Bundle;
  import android.view.View;\n"
  
      let onCreate = new StringBuilder()
      append onCreate <| "\n\n    /**
      * Called when the activity is first created.
      */
  