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troff

[−abcivzCERU] [−d cs] [−f fam] [−F dir] [−I dir] [−m name] [−M dir] [−n num] [−o list] [−r cn] [−T name] [−w name] [−W name] [file ...]

−a

Generate an ASCII approximation of the typeset output.

−b

Print a backtrace with each warning or error message. This backtrace should help track down the cause of the error. The line numbers given in the backtrace may not always be correct, for troff’s idea of line numbers gets confused by as or am requests.

−c

Disable color output (always disabled in compatibility mode).

−C

Enable compatibility mode.

−dcs

−E

Inhibit all error messages of troff. Note that this doesn’t affect messages output to standard error by macro packages using the tm or tm1 requests.

−ffam

Use fam as the default font family.

−Fdir

Search in directory (or directory path) dir for subdirectories devname (name is the name of the device) and there for the DESC file and font files. dir is scanned before all other font directories.

−i

Read the standard input after all the named input files have been processed.

−Idir

This option may be used to add a directory to the search path for files (both those on the command line and those named in .psbb requests). The search path is initialized with the current directory. This option may be specified more than once; the directories are then searched in the order specified (but before the current directory). If you want to make the current directory be read before other directories, add −I. at the appropriate place.

−mname

Read in the file name.tmac. If it isn’t found, try tmac.name instead. It will be first searched for in directories given with the −M command-line option, then in directories given in the GROFF_TMAC_PATH environment variable, then in the current directory (only if in unsafe mode), the home directory, /usr/ lib/groff/site−tmac, /usr/share/groff/site−tmac, and /usr/share/ groff/1.22.4/tmac.

−Mdir

Search directory (or directory path) dir for macro files. This is scanned before all other macro directories.

−nnum

Number the first page num.

−olist

Output only pages in list, which is a comma-separated list of page ranges; n means print page n, m−n means print every page between m and n, −n means print every page up to n, n− means print every page from n. troff will exit after printing the last page in the list.

−rcn

−R

Don’t load troffrc and troffrc−end.

−Tname

Prepare output for device name, rather than the default ps; see groff(1) for a more detailed description.

−U

Unsafe mode. This will enable the following requests: open, opena, pso, sy, and pi. For security reasons, these potentially dangerous requests are disabled otherwise. It will also add the current directory to the macro search path.

−v

Print the version number.

−wname

Enable warning name. Available warnings are described in section “Warnings” below. To enable most useful warnings use −w all. To enable absolutely all warnings use −w w instead. Multiple −w options are allowed.

−Wname

Inhibit warning name. Multiple −W options are allowed.

−z

Suppress formatted output.

break 4

In fill mode, lines which could not be broken so that their length was less than the line length. This is enabled by default.

char 1

Non-existent characters. This is enabled by default.

color 524288

Color-related warnings.

delim 8

Missing or mismatched closing delimiters.

di 256

Use of di or da without an argument when there is no current diversion.

el 16

Use of the el request with no matching ie request.

escape 32768

Unrecognized escape sequences. When an unrecognized escape sequence is encountered, the escape character is ignored.

file 1048576

Indicates a missing file for the mso request. Enabled by default.

font 131072

Non-existent fonts. This is enabled by default.

ig 262144

Invalid escapes in text ignored with the ig request. These are conditions that are errors when they do not occur in ignored text.

input 16384

Invalid input characters.

mac 512

Use of undefined strings, macros and diversions. When an undefined string, macro or diversion is used, that string is automatically defined as empty. So, in most cases, at most one warning will be given for each name.

missing 8192

Requests that are missing non-optional arguments.

number 2

Invalid numeric expressions. This is enabled by default.

range 64

Out of range arguments.

reg 1024

Use of undefined number registers. When an undefined number register is used, that register is automatically defined to have a value of 0. So, in most cases, at most one warning will be given for use of a particular name.

right-brace 4096

Use of \} where a number was expected.

scale 32

Meaningless scaling indicators.

space 65536

Missing space between a request or macro and its argument. This warning will be given when an undefined name longer than two characters is encountered, and the first two characters of the name make a defined name. The request or macro will not be invoked. When this warning is given, no macro is automatically defined. This is enabled by default. This warning will never occur in compatibility mode.

syntax 128

Dubious syntax in numeric expressions.

tab 2048

Inappropriate use of a tab character. Either use of a tab character where a number was expected, or use of tab character in an unquoted macro argument.

all

All warnings except di, mac, and reg. It is intended that this covers all warnings that are useful with traditional macro packages.

w

All warnings.