


      UUUULLLL((((1111))))                       ((((bbbbssssdddd 4444....2222))))                       UUUULLLL((((1111))))



      NNNNAAAAMMMMEEEE
           ul - do underlining

      SSSSYYYYNNNNTTTTAAAAXXXX
           uuuullll [ ----iiii ] [ ----tttt _t_e_r_m_i_n_a_l ] [ _n_a_m_e ...  ]

      DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
           _U_l reads the named files (or standard input if none are
           given) and translates occurrences of underscores to the
           sequence which indicates underlining for the terminal in
           use, as specified by the environment variable TERM.  The ----tttt
           option overrides the terminal kind specified in the
           environment.

           _U_l uses curses(3X) and terminfo(4) to determine the
           appropriate sequences for underlining.  If the terminal is
           incapable of underlining, but is capable of a standout mode
           then that is used instead.  If the terminal can overstrike,
           or handles underlining automatically, _u_l degenerates to
           _c_a_t(1).  If the terminal cannot underline, underlining is
           ignored.

           The ----iiii option causes _u_l to indicate underlining onto by a
           separate line containing appropriate dashes `-'; this is
           useful when you want to look at the underlining which is
           present in an _n_r_o_f_f output stream on a crt-terminal.

      SSSSEEEEEEEE AAAALLLLSSSSOOOO
           man(1), nroff(1), colcrt(1)

      BBBBUUUUGGGGSSSS
           _N_r_o_f_f usually outputs a series of backspaces and underlines
           intermixed with the text to indicate underlining.  No
           attempt is made to optimize the backward motion.





















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