Function NewDataFile(Name:String;Number:Word;FName:String):Word;

    This is the same  as  NewData  except  it  uses  the data from a file
    rather than a pointer.

    No memory check is made so the  user  must  ensure there is 2 kb heap
    available plus heap  space  to  load  the  entire  file  into memory.
    Thus 66 kb heap is the most the procedure will require.