* Does not handle a goto to a FORMAT label (is that allowed?).

* Probably will have problems if the FORTRAN keywords aren't
  all in CAPITAL LETTERS

* Does not handle properly GOTO'ing out of an IF block 
  (draws an extraneous continuation)

* Does not handle more than one END in a file.  [Meaning,
  if your protram has SUBROUTINEs after the main PROGRAM
  they will be ignored]