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 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 standard input. Output is written to the standard output.
Normally grotty prints a bold character c using the sequence `c BACKSPACE c' and a italic character c by the sequence `_ BACKSPACE c'. These sequences 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
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.
Use horizontal tabs in the output. Tabs are assumed to be set every 8 columns.
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.
Suppress the use of overstriking for bold characters.
Suppress the use of underlining for italic characters.
Use only overstriking for bold-italic characters.
Use only underlining for bold-italic characters.
Suppress overstriking (other than for bold or underlined characters).
Ignore all D commands. Without this grotty will render D'l...' commands that have at least at least one zero argument (and so are either horizontal or vertical) using -, | and + characters.
Device description file for ascii device.
Font description file for font F of ascii device.
Device description file for ascii8 device.
Device description file for latin1 device.
Device description file for nippon 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.
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.