anchor.diff:      "Message: " + msg
       |> printfn "%s"
   
  -let () =
  -    
  +let () =    
       let feName = ref None
       let generatorName = ref None
       let generatorParams = ref None
  
positive.code:         fun _ ->
              generateSomething := false
              printfn "\nAvailable %s: " iName
              Seq.map (fun x -> x + (if Some(x)=deft then " (default)" else "")) items
              |> String.concat "\n    "
              |> fun x -> printf "    %s\n" x
  
  
negative.code:     let userDefsStr = ref ""
  
      feName := // Fill by default value
          if Seq.exists ((=) "YardFrontend") FrontendsManager.Available
          then Some "YardFrontend"
          else Seq.tryFind (fun _ -> true) FrontendsManager.Available
              
      generatorName :=
          if Seq.exists ((=) "RNGLRGenerator") GeneratorsManager.Available
          then Some "RNGLRGenerator"
          else Seq.tryFind (fun _ -> true) GeneratorsManager.Available
  
      let generateSomething = ref true
  
  