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           grotty [ -bBcdfhiouUv ] [ -Fdir ] [ files... ]
           It is possible to have whitespace between the -F option and its parame-


           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  stan-
           dard  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
           aatt tthhee ssaammee ttiimmee (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 char-
           acter  c with the sequence 'c BACKSPACE c' and an italic character c by
           the sequence '_ BACKSPACE c'.  At the same time, color output  is  dis-
           abled.   The  same  effect  can  be  achieved  by  setting  either  the
           GROFF_NO_SGR environment variable or using the  'sgr'  X  command  (see
           For  SGR  support,  it  is necessary to use the -R option of less(1) to
           disable the interpretation  of  grotty's  old  output  format.   Conse-
           quently,  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.
           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 dis-
           play  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
                  isn't used.
           -c     Use  grotty's old output format (see above).  This also disables
                  color output.
           -d     Ignore  all  \D  commands.   Without  this  grotty  will  render
                  \D'l...'  commands  that have at least one zero argument (and so
                  are either horizontal or vertical) 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, usu-
                  ally 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 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 charac-
                  ters  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.


           grotty understands a single X command  produced  using  the  \X  escape
           \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


                  If set, the old drawing scheme for bold and underline (using the
                  backspace character) is active.  Colors are disabled.


                  Device description file for ascii device.
                  Font description file for font F of latin1 device.
                  Device description file for utf8 device.
                  Font description file for font F of utf8 device.
                  Device description file for cp1047 device.
                  Font description file for font F of cp1047 device.
                  Macros for use with grotty.
                  Additional klugdey character definitions for use with grotty.
           Note that on EBCDIC hosts, only files for the  cp1047  device  will  be


           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
           Characters above the first line (ie with a vertical position of 0) can-
           not 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, affect-
           ing all subsequent operations.


           groff(1), troff(1), groff_out(5), groff_font(5), groff_char(7),  ul(1),
           more(1), man(1), less(1)

    Groff Version 11 November 2010 GROTTY(1)


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