ultrix man page for ul

ul(1)							      General Commands Manual							     ul(1)

Name
       ul - process underscores for terminal

Syntax
       ul [-i] [-t terminal] [name...]

Description
       The  command  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 -t option overrides  the  terminal  kind
       specified  in  the  environment.  The file /etc/termcap is read 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  under-
       lining automatically, degenerates to If the terminal cannot underline, underlining is ignored.

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

Options
       -i Displays underscoring on separate line containing appropriate dashes (-).

       -t terminal
	  Uses type of specified terminal in place your terminal's type.

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

See Also
       man(1), nroff(1), colcrt(1)

																	     ul(1)