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GROTTY(1) GROTTY(1)
NAME
grotty - groff driver for typewriter-like devices
SYNOPSIS
grotty [ -bBcdfhiouUv ] [ -Fdir ] [ files... ]
It is possible to have whitespace between the -F option and its parameter.
DESCRIPTION
grotty translates the output of GNU troff into a form suitable for typewriter-like
devices. Normally grotty should be invoked by using the groff command with a
-Tascii, -Tascii8, -Tlatin1, -Tnippon or -Tutf8 option on ASCII based systems, and
with -Tcp1047 and -Tutf8 on EBCDIC based hosts. If no files are given, grotty will
read the standard input. A filename of - will also cause grotty to read the stan-
dard input. Output is written to the standard output.
By default, grotty emits SGR escape sequences (from ISO 6429, also called ANSI
color escapes) to change text attributes (bold, italic, colors). This makes it
possible to have eight different background and foreground colors; additionally,
bold and italic attributes can be used at the same time (by using the BI font).
The following colors are defined in tty.tmac: black, white, red, green, blue, yel-
low, magenta, cyan. Unknown colors are mapped to the default color (which is
dependent on the settings of the terminal; in most cases, this is black for the
foreground and white for the background).
Use the -c switch to revert to the old behaviour, printing a bold character c with
the sequence ‘c BACKSPACE c’ and an italic character c by the sequence ‘_ BACKSPACE
c’. At the same time, color output is disabled. The same effect can be achieved
by setting either the GROFF_NO_SGR environment variable or using the ‘sgr’ X com-
mand (see below).
For SGR support, it is necessary to use the -R option of less(1) to disable the
interpretation of grotty’s old output format. Consequently, all programs which use
less as the pager program have to pass this option to it. For man(1) in particu-
lar, either add -R to the $PAGER environment variable, e.g.
PAGER="/usr/bin/less -R"
export PAGER
or use the -P option of man to set the pager executable and its options, or modify
the configuration file of man in a similar fashion.
grotty’s old output format can be displayed on a terminal by piping through ul(1).
Pagers such as more(1) or less(1) are also able to display these sequences. Use
either -B or -U when piping into less(1); use -b when piping into more(1). There
is no need to filter the output through col(1) since grotty never outputs reverse
line feeds.
The font description file may contain a command
internalname n
where n is a decimal integer. If the 01 bit in n is set, then the font will be
treated as an italic font; if the 02 bit is set, then it will be treated as a bold
font. The code field in the font description field gives the code which will be
used to output the character. This code can also be used in the \N escape sequence
in troff.
OPTIONS
-b Suppress the use of overstriking for bold characters. Ignored if -c isn’t
used.
-B Use only overstriking for bold-italic characters. Ignored if -c isn’t used.
-c Use grotty’s old output format (see above). This also disables color out-
put.
-d Ignore all \D commands. Without this grotty will render \Dâ€â€™l...â€â€™ commands
that have at least one zero argument (and so are either horizontal or verti-
cal) using -, |, and + characters.
-f Use form feeds in the output. A form feed will be output at the end of each
page that has no output on its last line.
-Fdir Prepend directory dir/devname to the search path for font and device
description files; name is the name of the device, usually ascii, ascii8,
latin1, utf8, nippon or cp1047.
-h Use horizontal tabs in the output. Tabs are assumed to be set every 8
columns.
-i Use escape sequences to set the italic text attribute instead of the under-
line attribute for italic fonts (‘I’ and ‘BI’). Note that most terminals
(including xterm) don’t support this. Ignored if -c is active.
-o Suppress overstriking (other than for bold or underlined characters in case
the old output format has been activated with -c).
-u Suppress the use of underlining for italic characters. Ignored if -c isn’t
used.
-U Use only underlining for bold-italic characters. Ignored if -c isn’t used.
-v Print the version number.
USAGE
grotty understands a single X command produced using the \X escape sequence.
\Xâ€â€™tty: sgr nâ€â€™
If n is non-zero or missing, enable SGR output (this is the default), other-
wise use the old drawing scheme for bold and underline.
ENVIRONMENT
GROFF_NO_SGR
If set, the old drawing scheme for bold and underline (using the backspace
character) is active. Colors are disabled.
FILES
/usr/share/groff/1.18.1.1/font/devascii/DESC
Device description file for ascii device.
/usr/share/groff/1.18.1.1/font/devascii/F
Font description file for font F of ascii device.
/usr/share/groff/1.18.1.1/font/devascii8/DESC
Device description file for ascii8 device.
/usr/share/groff/1.18.1.1/font/devlatin1/DESC
Device description file for latin1 device.
/usr/share/groff/1.18.1.1/font/devnippon/DESC
Device description file for nippon device.
/usr/share/groff/1.18.1.1/font/devlatin1/F
Font description file for font F of latin1 device.
/usr/share/groff/1.18.1.1/font/devutf8/DESC
Device description file for utf8 device.
/usr/share/groff/1.18.1.1/font/devutf8/F
Font description file for font F of utf8 device.
/usr/share/groff/1.18.1.1/font/devcp1047/DESC
Device description file for cp1047 device.
/usr/share/groff/1.18.1.1/font/devcp1047/F
Font description file for font F of cp1047 device.
/usr/share/groff/1.18.1.1/tmac/tty.tmac
Macros for use with grotty.
/usr/share/groff/1.18.1.1/tmac/tty-char.tmac
Additional klugdey character definitions for use with grotty.
Note that on EBCDIC hosts, only files for the cp1047 device will be installed.
BUGS
grotty is intended only for simple documents.
There is no support for fractional horizontal or vertical motions.
There is no support for \D commands other than horizontal and vertical lines.
Characters above the first line (ie with a vertical position of 0) cannot be
printed.
Color handling is different compared to grops(1). \M doesn’t set the fill color
for closed graphic objects (which grotty doesn’t support anyway) but changes the
background color of the character cell, affecting all subsequent operations.
SEE ALSO
groff(1), troff(1), groff_out(5), groff_font(5), groff_char(7), ul(1), more(1),
man(1), less(1)
Groff Version 1.18.1.1 16 January 2006 GROTTY(1)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache/1.3.41 (Unix) PHP/5.2.5 mod_perl/1.30 mod_gzip/1.3.26.1a
Under GNU General Public License
2008-12-02 08:55 @38.103.63.58 CrawledBy CCBot/1.0 (+http://www.commoncrawl.org/bot.html)