%N grflun %F $MIR/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_science_miriad/miriad/work/miriad-4.3.8/borrow/pgplot/sys/grflun.f
%D Free a Fortran logical unit number (Sun/Convex-UNIX)
%B
      SUBROUTINE GRFLUN(LUN)
      INTEGER LUN

 Free a Fortran logical unit number allocated by GRGLUN. [This version
 does nothing.]

 Arguments:
  LUN    : the logical unit number to free.
