anchor.diff:            |> String.concat "," 
         printfn "%s" line )
   
  -(**
  +(*** hide ***)
  +(*
   Displaying data in a grid
   -------------------------
   
   We can display the data in a grid. 
   *)
  -
   open System.Windows.Forms
   
   // Create a window with a grid
  
positive.code:     )
  
  show page
  (**
  ![SAS dataset viewer](img/SasViewer.png)
  *)
  
negative.code:     where (obs.female <> Number 1. )
      sumBy obs.writing
      }
  
  (*** hide ***)
  (*
  The following is a slightly more interesting example which joins data from two data sets:
  *)
  
  (*
  // join two datasets
  [<Literal>] 
  let crimePath = @"../tests/FSharp.Data.Toolbox.Sas.Tests/files/crime.sas7bdat" 
  