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ul




DESCRIPTION

     Ul reads the named files (or standard input if none are given) and trans­
     lates occurrences of underscores to the sequence which indicates under­
     lining for the terminal in use, as specified by the environment variable
     TERM.  The terminfo database 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 ter­
     minal can overstrike, or handles underlining automatically, ul degener­
     ates to cat(1).  If the terminal cannot underline, underlining is
     ignored.

     The following options are available:

     -i      Underlining is indicated by a separate line containing appropri­
             ate dashes `-'; this is useful when you want to look at the
             underlining which is present in an nroff output stream on a crt-
             terminal.

     -t terminal
             Overrides the terminal type specified in the environment with
             terminal.


ENVIRONMENT

     The following environment variable is used:

     TERM  The TERM variable is used to relate a tty device with its device
           capability description (see terminfo(5)).  TERM is set at login
           time, either by the default terminal type specified in /etc/ttys or
           as set during the login process by the user in their login file
           (see setenv(1)).


SEE ALSO

     man(1), nroff(1), colcrt(1)


BUGS

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


HISTORY

     The ul command appeared in 3.0BSD.

4th Berkeley Distribution        June 6, 1993        4th Berkeley Distribution
  
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