Source : Free On-Line Dictionary of Computing

Fortran 77
     
        A popular version of {Fortran} with Block IF, PARAMETER and
        SAVE statements added, but still no WHILE.  It has
        fixed-length character strings, format-free I/O, and {array}s
        with lower bounds.
     
        [ANSI X3.9-1978].
     
        {GNU version (ftp://gnu.org/pub/gnu/g77)}.
     
        {Amiga version (ftp://ftp.cso.uiuc.edu/amiga/fish/ff470/BCF)}.
     
        (1994-12-16)