/**********************************************************

              This program a( ) edits 

         the original input text file  [A.txt] .

         It exchanges  the original word OW[ ] 

          with the new word NW[ ] in the text. 

               The output file is [B.txt] .

         It also needs the input data file [D.txt]

     which gives the values of NOW,NNW,OW[ ] and NW[ ].

***********************************************************

            [D.txt] [A.txt] a( ) --> [B.txt]

************* the input data file [D.txt] ******************

                 NOW =6
                 NNW =6
      Original Word  =0-1-15
           New Word  =0-1-16

/***********************************************************/