anchor.diff:          | Yard.Generators.RNGLR.Parser.Error (num, tok, message, debug, _) ->
               printfn "Error in position %d on Token %A: %s" num tok message
               debug.drawGSSDot "out.dot"
  +            Assert.Fail "!!!!!!"
           | Yard.Generators.RNGLR.Parser.Success(tree, _) ->
               tree.PrintAst()
               RNGLR.ParseCalc.defaultAstToDot tree "ast.dot"
  -        Assert.Pass()
  +            Assert.Pass()
   
       [<Test>]
       member this.``Calc. Branched input.`` () =
  
positive.code:         | Yard.Generators.RNGLR.Parser.Error (num, tok, message, debug, _) ->
              printfn "Error in position %d on Token %A: %s" num tok message
              debug.drawGSSDot "out.dot"
          | Yard.Generators.RNGLR.Parser.Success(tree, _) ->
              tree.PrintAst()
              RNGLR.ParseCalc.defaultAstToDot tree "ast.dot"
          Assert.Pass()
  
      [<Test>]
      member this.``Calc. Branched input 2.`` () =
  
negative.code:         | Yard.Generators.RNGLR.Parser.Error (num, tok, message, debug, _) ->
              printfn "Error in position %d on Token %A: %s" num tok message
              debug.drawGSSDot "out.dot"
              Assert.Fail "!!!!!!"
          | Yard.Generators.RNGLR.Parser.Success(tree, _) ->
              tree.PrintAst()
              RNGLR.SimpleCalcWithNTerm.defaultAstToDot tree "ast.dot"
              Assert.Pass()
  
  
      [<Test>]
  