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260 Cafè in LQC115 Derby SLIMMED Noir Calf I17 Caffe GROTTY(1)                                      General Commands Manual                                      GROTTY(1)



NAME
       grotty - groff driver for typewriter-like devices

SYNOPSIS
       grotty [ -bBcdfhioruUv ] [ -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, -Tlatin1 or -Tutf8 option on ASCII based systems,
       and  with  -Tcp1047 and -Tutf8 on EBCDIC based hosts.  If no files are given, grotty reads the standard input.
       A filename of - also causes grotty to read the standard 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, yellow, 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
       command (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 particular, 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.  Note that with some man(1) versions, you have  to  use  the  $MANPAGER  environment
       variable instead.

       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 is treated as an italic font;  if  the
       02 bit is set, then it is treated as a bold font.  The code field in the font description field gives the code
       which is used to output the character.  This code can also be used in the \N escape sequence in troff.

       If the DESC file contains the keyword unicode, grotty emits Unicode characters in UTF-8 encoding.   Otherwise,
       it  emits  characters  in a single-byte encoding depending on the data in the font description files.  See the
       groff_font(5) man page for more details.

OPTIONS

       -Fdir  Prepend  directory  dir/devname  to  the search path for font and device description files; name is the
              name of the device, usually ascii, latin1, utf8, 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  underline  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).

       -r     Use  escape  sequences  to set the reverse text attribute instead of the underline attribute for italic
              fonts (`I' and `BI').  Ignored if -c is active.

       -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.

       \X'tty: sgr n'
              If n is non-zero or missing, enable SGR output (this is the default), otherwise  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.  Col‐
              ors are disabled.

       GROFF_FONT_PATH
              A list of directories in which to search for the devname directory in addition  to  the  default  ones.
              See troff(1) and groff_font(5) for more details.

FILES
       /usr/share/groff/1.22.2/font/devascii/DESC
              Device description file for ascii device.

       /usr/share/groff/1.22.2/font/devascii/F
              Font description file for font F of ascii device.

       /usr/share/groff/1.22.2/font/devlatin1/DESC
              Device description file for latin1 device.

       /usr/share/groff/1.22.2/font/devlatin1/F
              Font description file for font F of latin1 device.

       /usr/share/groff/1.22.2/font/devutf8/DESC
              Device description file for utf8 device.


       /usr/share/groff/1.22.2/tmac/tty-char.tmac
              Additional klugdey character definitions for use with grotty.

       Note that on EBCDIC hosts, only files for the cp1047 device is 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 1.22.2                               7 February 2013                                          GROTTY(1)