Namelist I/O statements are similar to formatted statements in
  function, but control the translation of data through data types
  instead of explicit format specifiers.

  Namelist I/O statements do not specify a format (FMT=) in the
  control list (clist).

  Namelist sequential READ:

     READ (UNIT=u,NML=nml[,IOSTAT=ios][,ERR=err][,END=end])
     READ n

  Namelist sequential WRITE:

    WRITE (UNIT=u,NML=nml[,IOSTAT=ios][,ERR=err])

  Comments (beginning with !  only) can appear anywhere in namelist
  input.  The comment extends to the end of the source line.