anchor.diff:  
     [ref]: http://there "Author: Article"
   *)"""
  -  let doc = Literate.ParseScriptString(content, "C:\\A.fsx", formatAgent, references=true)
  +  let doc = Literate.ParseScriptString(content, "C" @@ "A.fsx", formatAgent, references=true)
     doc.Paragraphs |> shouldMatchPar (function ListBlock(_, _) -> true | _ -> false)
     doc.Paragraphs |> shouldMatchSpan (function Literal("Article") -> true | _ -> false) 
     doc.Paragraphs |> shouldMatchSpan (function Literal(" - Author") -> true | _ -> false) 
  
positive.code:   let content = """
  (** **hello** *)
  let test = 4 + 1.0"""
    let doc = Literate.ParseScriptString(content, "C:\\A.fsx", formatAgent)
    doc.Errors |> Seq.length |> should be (greaterThan 0)
  
  // --------------------------------------------------------------------------------------
  
negative.code:   let content = """
  (** **hello** *)
  let test = 42"""
    let doc = Literate.ParseScriptString(content, "C" @@ "A.fsx", formatAgent)
    doc.Errors |> Seq.length |> shouldEqual 0
    doc.Paragraphs |> shouldMatchPar (function
      | Matching.LiterateParagraph(FormattedCode(_)) -> true | _ -> false)
  