anchor.diff:        on (trim crime.State = trim state.State)
     select (crime.murder_rate, state.State)
   }
  +*)
   
   (**
   Accessing data in a generic way
  
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" 
  