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tbl(1) General Commands Manual tbl(1)
tbl - prepare tables for groff documents
tbl [-C] [file ...]
tbl --help
tbl -v
tbl --version
The GNU implementation of tbl is part of the groff(1) document
formatting system. tbl is a troff(1) preprocessor that translates
descriptions of tables embedded in roff(7) input into the language
understood by troff. It copies the contents of each file to the
standard output stream, except that lines between .TS and .TE are
interpreted as table descriptions. While GNU tbl's input syntax
is highly compatible with AT&T tbl, the output GNU tbl produces
cannot be processed by AT&T troff; GNU troff (or a troff
implementing any GNU extensions employed) must be used. Normally,
tbl is not executed directly by the user, but invoked by
specifying the -t option to groff(1). If no file operands are
present, or if file is “-”, tbl reads the standard input stream.
Overview
tbl expects to find table descriptions between input lines that
begin with .TS (table start) and .TE (table end). Each such table
region encloses one or more table descriptions. Within a table
region, table descriptions beyond the first must each be preceded
by an input line beginning with .T&. This mechanism does not
start a new table region; all table descriptions are treated as
part of their .TS/.TE enclosure, even if they are boxed or have
column headings that repeat on subsequent pages (see below).
(Experienced roff users should observe that tbl is not a roff
language interpreter: the default control character must be used,
and no spaces or tabs are permitted between the control character
and the macro name. These tbl input tokens remain as-is in the
output, where they become ordinary macro calls. Macro packages
often define TS, T&, and TE macros to handle issues of table
placement on the page. tbl produces groff code to define these
macros as empty if their definitions do not exist when the
formatter encounters a table region.)
Each table region may begin with region options, and must contain
one or more table definitions; each table definition contains a
format specification followed by one or more input lines (rows) of
entries. These entries comprise the table data.
Region options
The line immediately following the .TS token may specify region
options, keywords that influence the interpretation or rendering
of the region as a whole or all table entries within it
indiscriminately. They must be separated by commas, spaces, or
tabs. Those that require a parenthesized argument permit spaces
and tabs between the option's name and the opening parenthesis.
Options accumulate and cannot be unset within a region once
declared; if an option that takes a parameter is repeated, the
last occurrence controls. If present, the set of region options
must be terminated with a semicolon (;).
Any of the allbox, box, doublebox, frame, and doubleframe region
options makes a table “boxed” for the purpose of later discussion.
allbox Enclose each table entry in a box; implies box.
box Enclose the entire table region in a box. GNU tbl
recognizes frame as a synonym.
center Center the table region with respect to the current
indentation and line length; the default is to left-align
it. GNU tbl recognizes centre as a synonym.
decimalpoint(c)
Recognize character c as the decimal separator in columns
using the N (numeric) classifier (see subsection “Column
classifiers” below). This is a GNU extension.
delim(xy)
Recognize characters x and y as start and end delimiters,
respectively, for eqn(1) input, and ignore input between
them. x and y need not be distinct.
doublebox
Enclose the entire table region in a double box; implies
box. GNU tbl recognizes doubleframe as a synonym.
expand Spread the table horizontally to fill the available space
(line length minus indentation) by increasing column
separation. Ordinarily, a table is made only as wide as
necessary to accommodate the widths of its entries and its
column separations (whether specified or default). When
expand applies to a table that exceeds the available
horizontal space, column separation is reduced as far as
necessary (even to zero). tbl produces groff input that
issues a diagnostic if such compression occurs. The column
modifier x (see below) overrides this option.
linesize(n)
Draw lines or rules (e.g., from box) with a thickness of
n points. The default is the current type size when the
region begins. This option is ignored on terminal devices.
nokeep Don't use roff diversions to manage page breaks. Normally,
tbl employs them to avoid breaking a page within a table
row. This usage can sometimes interact badly with macro
packages' own use of diversions—when footnotes, for
example, are employed. This is a GNU extension.
nospaces
Ignore leading and trailing spaces in table entries. This
is a GNU extension.
nowarn Suppress diagnostic messages produced at document
formatting time when the line or page lengths are
inadequate to contain a table row. This is a GNU
extension.
tab(c) Use the character c instead of a tab to separate entries in
a row of table data.
Table format specification
The table format specification is mandatory: it determines the
number of columns in the table and directs how the entries within
it are to be typeset. The format specification is a series of
column descriptors. Each descriptor encodes a classifier followed
by zero or more modifiers. Classifiers are letters (recognized
case-insensitively) or punctuation symbols; modifiers consist of
or begin with letters or numerals. Spaces, tabs, newlines, and
commas separate descriptors. Newlines and commas are special;
they apply the descriptors following them to a subsequent row of
the table. (This enables column headings to be centered or
emboldened while the table entries for the data are not, for
instance.) We term the resulting group of column descriptors a
row definition. Within a row definition, separation between
column descriptors (by spaces or tabs) is often optional; only
some modifiers, described below, make separation necessary.
The classifier selects from one of several arrangements. Some
determine the positioning of table entries within a rectangular
cell: centered, left-aligned, numeric (aligned to a configurable
decimal separator), and so on. Others perform special operations
like drawing lines or spanning entries from adjacent cells in the
table. Except for “|”, any classifier can be followed by one or
more modifiers; some of these accept an argument, which in GNU tbl
can be parenthesized. Modifiers select fonts, set the type size,
and perform other tasks described below.
The format specification can occupy multiple input lines, but must
conclude with a dot “.” followed by a newline. Each row
definition is applied in turn to one row of the table. tbl
applies the last row definition to rows of table data in excess of
the row definitions.
For clarity in this document's examples, we write classifiers in
uppercase and modifiers in lowercase. Thus, “CbCb,LR.” defines
two rows of two columns. The first row's entries are centered and
boldfaced; the second and any further rows' first and second
columns are left- and right-aligned, respectively. Any rows of
entries appended to the table data reuse the row definition “LR”.
The row definition with the most column descriptors determines the
number of columns in the table; GNU tbl implicitly extends any row
definition with fewer on the right-hand side with L descriptors as
many times as necessary to make the table rectangular.
Column classifiers
The L, R, and C classifiers are the easiest to understand and use.
A, a Center longest entry in this column, left-align remaining
entries in the column with respect to the centered entry,
then indent all entries by one en. Such “alphabetic”
entries (hence the name of the classifier) can be used in
the same column as L-classified entries, as in “LL,AR.”.
The A entries are often termed “sub-columns” due to their
indentation.
C, c Center entry within the column.
L, l Left-align entry within the column.
N, n Numerically align entry in the column. tbl aligns columns
of numbers vertically at the units place. If multiple
decimal separators are adjacent to a digit, it uses the
rightmost one for vertical alignment. If there is no
decimal separator, tbl uses the rightmost digit for
vertical alignment; if no digits are present, tbl centers
the entry within the column. The roff dummy character \&
in an entry marks the glyph preceding it (if any) as the
units place; if multiple instances occur in the data, tbl
uses the leftmost for alignment.
If N-classified entries share a column with L or R entries,
tbl centers the widest N entry with respect to the widest L
or R entry, preserving the alignment of N entries with
respect to each other.
Decimal separators in eqn equations within N-classified
columns can conflict with tbl's use of them for alignment.
Specify the delim region option to make tbl ignore the data
within eqn delimiters.
R, r Right-align entry within the column.
S, s Span previous entry on the left into this column.
^ Span entry in the same column from the previous row into
this row.
_, - Replace table entry with a horizontal rule. tbl expects an
empty table entry to correspond to this classifier; if data
are found there, it issues a diagnostic message. If the
entire row definition consists of these classifiers (only
one is necessary), it is treated as a “_” occupying a row
of table entries, and no corresponding data are expected.
= Replace table entry with a double horizontal rule. tbl
expects an empty table entry to correspond to this
classifier; if data are found there, it issues a diagnostic
message. If the entire row definition consists of these
classifiers (only one is necessary), it is treated as a “=”
occupying a row of table entries, and no corresponding data
are expected.
| Place a vertical rule (line) on the corresponding row of
the table (if two of these are adjacent, a double vertical
rule). This classifier does not contribute to the column
count and no table entries correspond to it. A | to the
left of the first column descriptor or to the right of the
last one produces a vertical rule at the edge of the table;
these are redundant (and ignored) in boxed tables.
To change the table format within a tbl region, use the .T& token
at the start of a line. Follow it with a format specification and
table data, but not region options. The quantity of columns in a
format thus introduced cannot increase relative to the previous
format; in that case, you must end the table region and start
another. If that will not serve because the region uses box
options or the columns align in an undesirable manner, you must
design the initial table format specification to include the
maximum quantity of columns required, and use the S horizontal
spanning classifier where necessary to achieve the desired
columnar alignment.
Spanning horizontally in the first column or vertically on the
first row is an error. tbl does not support non-rectangular span
areas.
Column modifiers
Any number of modifiers can follow a column classifier. Modifier
arguments, where accepted, are case-sensitive. If a given
modifier is applied to a classifier more than once, or if
conflicting modifiers are applied, only the last occurrence has
effect. The modifier x is mutually exclusive with e and w, but e
is not mutually exclusive with w; if these are used in
combination, x unsets both e and w, while either e or w
overrides x.
b, B Typeset entry in boldface, abbreviating f(B).
d, D Align a vertically spanned table entry to the bottom
(“down”), instead of the center, of its range. This is a
GNU extension.
e, E Equalize the widths of columns with this modifier to that
of the widest. This modifier sets the default line length
used in a text block.
f, F Select the typeface for the table entry. A font or style
name (one or two characters not starting with a digit),
font mounting position (a single digit), or a name or
mounting position of any length in parentheses, must
follow. The last form is a GNU extension. (The parameter
corresponds to that accepted by the troff ft request.) A
one-character argument not in parentheses must be separated
by one or more spaces or tabs from what follows.
i, I Typeset entry in an oblique or italic face, abbreviating
f(I).
m, M Call a groff macro before typesetting a text block (see
subsection “Text blocks” below). This is a GNU extension.
A macro name of one or two characters, or a name of any
length in parentheses, must follow. A one-character macro
name not in parentheses must be separated by one or more
spaces or tabs from what follows. The named macro must be
defined before the table region containing this column
modifier is encountered. The macro should contain only
simple groff requests to change text formatting, like
adjustment or hyphenation. The macro is called after the
column modifiers b, f, i, p, and v take effect; it can thus
override other column modifiers.
p, P Set the type size. An integer n with an optional leading
sign must follow. If unsigned, the type size is set to
n scaled points. Otherwise, the type size is incremented
or decremented per the sign by n scaled points. The use of
a signed multi-digit number is a GNU extension. (The
parameter corresponds to that accepted by the troff ps
request.) If a type size modifier is followed by a column
separation modifier (see below), they must be separated by
at least one space or tab.
t, T Align a vertically spanned table entry to the top, instead
of the center, of its range.
u, U Move the column up one half-line, “staggering” the rows.
This is a Documenter's Workbench (DWB) 1.0 and Research
Tenth Edition Unix extension.
v, V Set the vertical spacing of a text block. An integer n
with an optional leading sign must follow. If unsigned,
the vertical spacing is set to n points. Otherwise, the
vertical spacing is incremented or decremented per the sign
by n points. The use of a signed multi-digit number is a
GNU extension. (This parameter corresponds to that
accepted by the troff vs request.) If a vertical spacing
modifier is followed by a column separation modifier (see
below), they must be separated by at least one space or
tab.
w, W Set the column's minimum width. A number, either a
unitless integer, or a roff horizontal measurement in
parentheses, must follow. Parentheses are required if the
width is to be followed immediately by an explicit column
separation (alternatively, follow the width with one or
more spaces or tabs). If no unit is specified, ens are
assumed. This modifier sets the default line length used
in a text block.
x, X Expand the column. After computing the column widths,
distribute any remaining line length evenly over all
columns bearing this modifier. Applying the x modifier to
more than one column is a GNU extension. This modifier
sets the default line length used in a text block.
z, Z Ignore the table entries corresponding to this column for
width calculation purposes; that is, compute the column's
width using only the information in its descriptor. This
is a Documenter's Workbench (DWB) 1.0 and Research Tenth
Edition Unix extension.
n A numeric suffix on a column descriptor sets the separation
distance (in ens) from the succeeding column; the default
separation is 3n. This separation is proportionally
multiplied if the expand region option is in effect; in the
case of tables wider than the output line length, this
separation might be zero. A negative separation cannot be
specified. A separation amount after the last column in a
row is nonsensical and provokes a diagnostic from tbl.
Table data
Place table data on lines after the format specification. Each
text line corresponds to a table row, except that a backslash at
the end of a line of table data continues an entry on the next
input line. (Text blocks, discussed below, also spread table
entries across multiple input lines.) Table entries within a row
are separated in the input by a tab character by default; see the
tab region option above. Excess entries in a row of table data
(those that have no corresponding column descriptor, not even an
implicit one arising from rectangularization of the table) are
discarded with a diagnostic message. roff control lines are
accepted between rows of table data and within text blocks. If
you wish to visibly mark an empty table entry in the document
source, populate it with the \& roff dummy character. The table
data are interrupted by a line consisting of the .T& input token,
and conclude with the line .TE.
Ordinarily, a table entry is typeset rigidly. It is not filled,
broken, hyphenated, adjusted, or populated with additional inter-
sentence space. tbl instructs the formatter to measure each table
entry as it occurs in the input, updating the width required by
its corresponding column. If the z modifier applies to the
column, this measurement is ignored; if w applies and its argument
is larger than this width, that argument is used instead. In
contrast to conventional roff input (within a paragraph, say),
changes to text formatting, such as font selection or vertical
spacing, do not persist between entries.
Several forms of table entry are interpreted specially.
• If a table row contains only an underscore or equals sign (_ or
=), a single or double horizontal rule (line), respectively, is
drawn across the table at that point.
• A table entry containing only _ or = on an otherwise populated
row is replaced by a single or double horizontal rule,
respectively, joining its neighbors.
• Prefixing a lone underscore or equals sign with a backslash
also has meaning. If a table entry consists only of \_ or \=
on an otherwise populated row, it is replaced by a single or
double horizontal rule, respectively, that does not (quite)
join its neighbors.
• A table entry consisting of \Rx, where x is any roff ordinary
or special character, is replaced by enough repetitions of the
glyph corresponding to x to fill the column, albeit without
joining its neighbors.
• On any row but the first, a table entry of \^ causes the entry
above it to span down into the current one.
On occasion, these special tokens may be required as literal table
data. To use either _ or = literally and alone in an entry,
prefix or suffix it with the roff dummy character \&. To express
\_, \=, or \R, use a roff escape sequence to interpolate the
backslash (\e or \[rs]). A reliable way to emplace the \^ glyph
sequence within a table entry is to use a pair of groff special
character escape sequences (\[rs]\[ha]).
Rows of table entries can be interleaved with groff control lines;
these do not count as table data. On such lines the default
control character (.) must be used (and not changed); the no-break
control character is not recognized. To start the first table
entry in a row with a dot, precede it with the roff dummy
character \&.
Text blocks
An ordinary table entry's contents can make a column, and
therefore the table, excessively wide; the table then exceeds the
line length of the page, and becomes ugly or is exposed to
truncation by the output device. When a table entry requires more
conventional typesetting, breaking across more than one output
line (and thereby increasing the height of its row), it can be
placed within a text block.
tbl interprets a table entry of “T{” at the end of an input line
specially, as a token starting a text block. Similarly, an entry
“T}” at the start of an input line ends a text block. Text block
tokens can share an input line with other table data (preceding T{
and following T}). Input lines between these tokens are formatted
in a diversion by troff. Text blocks cannot be nested. Multiple
text blocks can occur in a table row.
Text blocks are formatted as was the text prior to the table,
modified by applicable column descriptors. Specifically, the
classifiers A, C, L, N, R, and S determine a text block's
alignment within its cell, but not its adjustment. Add na or ad
requests to the beginning of a text block to alter its adjustment
distinctly from other text in the document. As with other table
entries, when a text block ends, any alterations to formatting
parameters are discarded. They do not affect subsequent table
entries, not even other text blocks.
If w or x modifiers are not specified for all columns of a text
block's span, the default length of the text block (more
precisely, the line length used to process the text block's
diversion) is computed as L×C/(N+1), where L is the current line
length, C the number of columns spanned by the text block, and N
the number of columns in the table. If necessary, you can also
control a text block's width by including an ll (line length)
request in it prior to any text to be formatted. Because a
diversion is used to format the text block, its height and width
are subsequently available in the registers dn and dl,
respectively.
[1mroff[24m interface
The register TW stores the width of the table region in basic
units; it can't be used within the region itself, but is defined
before the .TE token is output so that a groff macro named TE can
make use of it. T. is a Boolean-valued register indicating
whether the bottom of the table is being processed. A #T register
is used internally. Avoid using these names for any other
purpose.
tbl also defines a macro T# to produce the bottom and side lines
of a boxed table. While tbl itself arranges for the output to
include a call of this macro at the end of such a table, it can
also be used by macro packages to create boxes for multi-page
tables by calling it from a page footer macro that is itself
called by a trap planted near the bottom of the page. See section
“Limitations” below for more on multi-page tables.
GNU tbl internally employs register, string, macro, and diversion
names beginning with the numeral 3. A document to be preprocessed
with GNU tbl should not use any such identifiers.
[1mInteraction with eqn
Process a document with tbl before eqn(1). (groff(1)
automatically arranges preprocessors in the correct order.) Don't
call the EQ and EN macros within tables; instead, set up
delimiters in your eqn input and use the delim region option so
that tbl will recognize them.
GNU tbl enhancements
In addition to extensions noted above, GNU tbl removes constraints
endured by users of AT&T tbl.
• Region options can be specified in any lettercase.
• There is no limit on the number of columns in a table,
regardless of their classification, nor any limit on the number
of text blocks.
• All table rows are considered when deciding column widths, not
just those occurring in the first 200 input lines of a region.
Similarly, table continuation (.T&) tokens are recognized
outside a region's first 200 input lines.
• Numeric and alphabetic entries may appear in the same column.
• Numeric and alphabetic entries may span horizontally.
Using GNU tbl within macros
You can embed a table region inside a macro definition. However,
since tbl writes its own macro definitions at the beginning of
each table region, it is necessary to call end macros instead of
ending macro definitions with “..”. Additionally, the escape
character must be disabled.
Not all tbl features can be exercised from such macros because tbl
is a roff preprocessor: it sees the input earlier than troff does.
For example, vertically aligning decimal separators fails if the
numbers containing them occur as macro or string parameters; the
alignment is performed by tbl itself, which sees only \$1, \$2,
and so on, and therefore can't recognize a decimal separator that
appears only later when troff interpolates a macro or string
definition.
Using tbl macros within conditional input (that is, contingent
upon an if, ie, el, or while request) can result in misleading
line numbers in subsequent diagnostics. tbl unconditionally
injects its output into the source document, but the conditional
branch containing it may not be taken, and if it is not, the lf
requests that tbl injects to restore the source line number cannot
take effect. Consider copying the input line counter register c.
and restoring its value at a convenient location after applicable
arithmetic.
--help displays a usage message, while -v and --version show
version information; all exit afterward.
-C Enable AT&T compatibility mode: recognize .TS and .TE even
when followed by a character other than space or newline,
and interpret the copy-mode leader escape sequence \a as a
leader character.
tbl exits with status 0 on successful operation, status 2 if the
program cannot interpret its command-line arguments, and status 1
if it encounters an error during operation.
Outside of text blocks, avoid use of roff escape sequences that
read to the end of the line, as \" and \! do.
Multi-page tables, if boxed and/or if you want their column
headings repeated after page breaks, require support at the time
the document is formatted. A convention for such support has
arisen in macro packages such as ms, mm, and me. To use it,
follow the .TS token with a space and then “H”; this will be
interpreted by the formatter as a TS macro call with an H
argument. Then, within the table data, call the TH macro; this
informs the macro package where the headings end. If your table
has no such heading rows, or you do not desire their repetition,
call TH immediately after the table format specification. If a
multi-page table is boxed or has repeating column headings, do not
enclose it with keep/release macros, or divert it in any other
way. Further, the bp request will not cause a page break in a “TS
H” table. Define a macro to wrap bp: invoke it normally if there
is no current diversion. Otherwise, pass the macro call to the
enclosing diversion using the transparent line escape sequence \!;
this will “bubble up” the page break to the output device. See
section “Examples” below for a demonstration.
grotty(1) does not support double horizontal rules; it uses single
rules instead. It also ignores half-line motions, so the u column
modifier has no effect. On terminal devices (“nroff mode”),
horizontal rules and box borders occupy a full vee of space;
doublebox doubles that for borders. Tables using these features
thus require more vertical space in nroff mode than in troff mode:
write ne requests accordingly. Vertical rules between columns are
drawn in the space between columns in nroff mode; using double
vertical rules and/or reducing the column separation below the
default can make them ugly or overstrike them with table data.
A text block within a table must be able to fit on one page.
Using \a to put leaders in table entries does not work in GNU tbl,
except in compatibility mode. This is correct behavior: \a is an
uninterpreted leader. You can still use the roff leader character
(Control+A) or define a string to use \a as it was designed: to be
interpreted only in copy mode.
.ds a \a
.TS
box center tab(;);
Lw(2i)0 L.
Population\*a;6,327,119
.TE
┌───────────────────────────────┐
│ Population..........6,327,119 │
└───────────────────────────────┘
A leading or trailing “|” in a format specification, as in
“|LCR|.”, produces an en space between the rules and the content
of adjacent columns. If such space is undesired (the rule should
abut the content), you can introduce “dummy” columns with zero
separation and empty corresponding table entries before and/or
after.
.TS
center tab(#);
R0|L C R0|L.
_
#levulose#glucose#dextrose#
_
.TE
These dummy columns have zero width and are therefore invisible;
unfortunately they usually don't work as intended on terminal
devices.
It can be easier to acquire the language of tbl through examples
than formal description, especially at first.
.TS
box center tab(#);
Cb Cb
L L.
Ability#Application
Strength#crushes a tomato
Dexterity#dodges a thrown tomato
Constitution#eats a month-old tomato without becoming ill
Intelligence#knows that a tomato is a fruit
Wisdom#chooses \f[I]not\f[] to put tomato in a fruit salad
Charisma#sells tomato-based fruit salads to hypercarnivores
.TE
┌───────────────────────────────────────────────────────────────────┐
│ Ability Application │
│ Strength crushes a tomato │
│ Dexterity dodges a thrown tomato │
│ Constitution eats a month-old tomato without becoming ill │
│ Intelligence knows that a tomato is a fruit │
│ Wisdom chooses not to put tomato in a fruit salad │
│ Charisma sells tomato-based fruit salads to hypercarnivores │
└───────────────────────────────────────────────────────────────────┘
The A and N column classifiers can be easier to grasp in visual
rendering than in description.
.TS
center tab(;);
CbS,LN,AN.
Daily energy intake (in MJ)
Macronutrients
.\" assume 3 significant figures of precision
Carbohydrates;4.5
Fats;2.25
Protein;3
.T&
LN,AN.
Mineral
Pu-239;14.6
_
.T&
LN.
Total;\[ti]24.4
.TE
Daily energy intake (in MJ)
Macronutrients
Carbohydrates 4.5
Fats 2.25
Protein 3
Mineral
Pu-239 14.6
────────────────────────────
Total ~24.4
Next, we'll lightly adapt a compact presentation of spanning,
vertical alignment, and zero-width column modifiers from the
mandoc reference for its tbl interpreter. It rewards close study.
.TS
box center tab(:);
Lz S | Rt
Ld| Cb| ^
^ | Rz S.
left:r
l:center:
:right
.TE
┌────────────┬───┐
│ le│ft │ r │
│ │ center │ │
│ l │ right │
└───┴────────────┘
Row staggering is not visually achievable on terminal devices, but
a table using it can remain comprehensible nonetheless.
.TS
center tab(|);
Cf(BI) Cf(BI) Cf(B), C C Cu.
n|n\f[B]\[tmu]\f[]n|difference
1|1
2|4|3
3|9|5
4|16|7
5|25|9
6|36|11
.TE
[1mn[24m n×n difference
1 1
2 4 3
3 9 5
4 16 7
5 25 9
6 36 11
Some tbl features cannot be illustrated in the limited environment
of a portable man page.
We can define a macro outside of a tbl region that we can call
from within it to cause a page break inside a multi-page boxed
table. You can choose a different name; be sure to change both
occurrences of “BP”.
.de BP
. ie '\\n(.z'' .bp \\$1
. el \!.BP \\$1
..
“Tbl—A Program to Format Tables”, by M. E. Lesk, 1976 (revised 16
January 1979), AT&T Bell Laboratories Computing Science Technical
Report No. 49.
The spanning example above was taken from mandoc's man page for
its tbl implementation ⟨https://man.openbsd.org/tbl.7⟩.
groff(1), troff(1)
This page is part of the groff (GNU troff) project. Information
about the project can be found at
⟨http://www.gnu.org/software/groff/⟩. If you have a bug report for
this manual page, see ⟨http://www.gnu.org/software/groff/⟩. This
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groff 1.23.0.3821-a8b3f 2025-08-09 tbl(1)
Pages that refer to this page: col(1), colcrt(1)
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