UL(1)                      OpenBSD Reference Manual                      UL(1)

NAME
     ul - do underlining

SYNOPSIS
     ul [-i] [-t terminal] [file ...]

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 file /etc/termcap is read to determine the appropriate se-
     quences 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, ul degen-
     erates to cat(1).  If the terminal cannot underline, underlining is ig-
     nored.

     The options are as follows:

     -i      Underlining is indicated by a separate line containing appropri-
             ate dashes (`-'); this is useful when you want to look at the un-
             derlining which is present in an nroff(1) output stream.

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

ENVIRONMENT
     TERM  Used to relate a tty device with its device capability description
           (see termcap(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 environ(7)).

SEE ALSO
     colcrt(1), man(1), nroff(1)

HISTORY
     The ul command appeared in 3.0BSD.

BUGS
     nroff(1) usually outputs a series of backspaces and underlines intermixed
     with the text to indicate underlining.  No attempt is made to optimize
     the backward motion.

OpenBSD 4.7                    October 16, 2007                              1
