UL(1) MachTen Reference Manual UL(1)

NAME
ul - do underlining

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

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 ter-
minal can overstrike, or handles underlining automatically, ul degener-
ates to cat(1). If the terminal cannot underline, underlining is ig-
nored.

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 un-
derlining 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 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 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 1