Number registers and strings

Many macros can be controlled by number registers and strings. A number register is assigned with the nr command:

XXX is the name of the register, n is the value to be assigned, and i is the increment value for auto-increment. n can have a plus or minus sign as a prefix if an increment or decrement of the current value is wanted. (Auto-increment or auto-decrement occurs if the number register is used with a plus or minus sign, \n+[XXX] or \n-[XXX].)

Strings are defined with ds.

The string is assigned everything to the end of the line, even blanks. Initial blanks in string should be prefixed with a double-quote. (Strings are used in the text as \*[YYY].)

Special formatting of number registers

A number register is printed with normal digits if no format has been given. Set the format with af:

R is the name of the register, c is the format.

Fonts

In mm, the fonts (or rather, font styles) R (normal), I (italic), and B (bold) are hardwired to font positions 1, 2, and 3, respectively. Internally, font positions are used for backwards compatibility. From a practical point of view it doesn't make a big difference – a different font family can still be selected with a call to the .fam request or using groff's -f command-line option. On the other hand, if you want to replace just, say, font B, you have to replace the font at position 2 (with a call to ‘.fp 2 ...’).

Macros

)E level text

Add heading text text to the table of contents with level, which is either 0 or in the range 1 to 7. See also .H. This macro is used for customized tables of contents.

1C [1]

Begin one-column processing. A 1 as an argument disables the page break. Use wide footnotes, small footnotes may be overprinted.

2C

Begin two-column processing. Splits the page in two columns. It is a special case of MC. See also 1C.

AE

Abstract end, see AS.

AF [name-of-firm]

Author's firm, should be called before AU, see also COVER.

AL [type [text-indent [1]]]

Start auto-increment list. Items are numbered beginning with one. The type argument controls the format of numbers.

text-indent sets the indentation and overrides Li. A third argument prohibits printing of a blank line before each item.

APP name text

Begin an appendix with name name. Automatic naming occurs if name is "". The appendices start with A if automatic naming is used. A new page is ejected, and a header is also produced if the number variable Aph is non-zero. This is the default. The appendix always appears in the ‘List of contents’ with correct page numbers. The name ‘APPENDIX’ can be changed by setting the string App to the desired text. The string Apptxt contains the current appendix text.

APPSK name pages text

Same as .APP, but the page number is incremented with pages. This is used when diagrams or other non-formatted documents are included as appendices.

AS [arg [indent]]

Abstract start. Indentation is specified in ‘ens’, but scaling is allowed. Argument arg controls where the abstract is printed.

An abstract is not printed at all in external letters (MT 5). The indent parameter controls the indentation of both margins, otherwise normal text indentation is used.

AST [title]

Abstract title. Default is ‘ABSTRACT’. Sets the text above the abstract text.

AT title1 [title2 [...]]

Author's title. AT must appear just after each AU. The title shows up after the name in the signature block.

AU [name [initials [loc [dept [ext [room [arg [arg [arg]]]]]]]]]

Author information. Specifies the author of the memo or paper, and is printed on the cover sheet and on other similar places. AU must not appear before TL. The author information can contain initials, location, department, telephone extension, room number or name and up to three extra arguments.

AV [name [1]]

Approval signature. Generates an approval line with place for signature and date. The string ‘APPROVED:’ can be changed with variable Letapp; it is replaced with an empty lin if there is a second argument. The string ‘Date’ can be changed with variable Letdate.

AVL [name]

Letter signature. Generates a line with place for signature.

B [bold-text [prev-font-text [bold [...]]]]

Begin boldface. No limit on the number of arguments. All arguments are concatenated to one word; the first, third and so on is printed in boldface.

B1

Begin box (as the ms macro). Draws a box around the text. The text is indented one character, and the right margin is one character shorter.

B2

End box. Finishes the box started with B1.

BE

End bottom block, see BS.

BI [bold-text [italic-text [bold-text [...]]]]

Bold-italic. No limit on the number of arguments, see B.

BL [text-indent [1]]

Start bullet list. Initializes a list with a bullet and a space in the beginning of each list item (see LI). text-indent overrides the default indentation of the list items set by number register Pi. A third argument prohibits printing of a blank line before each item.

BR [bold-text [roman-text [bold-text [...]]]]

Bold-roman. No limit on the number of arguments.

BS

Bottom block start. Begins the definition of a text block which is printed at the bottom of each page. The block ends with BE.

BVL text-indent [mark-indent [1]]

Start of broken variable-item list. Broken variable-item list has no fixed mark, it assumes that every LI has a mark instead. The text always begins at the next line after the mark. text-indent sets the indentation to the text, and mark-indent the distance from the current indentation to the mark. A third argument prohibits printing of a blank line before each item.

COVER [arg]

Begin a coversheet definition. It is important that .COVER appears before any normal text. This macro uses arg to build the filename /usr/share/groff/1.22.4/tmac/mm/arg.cov. Therefore it is possible to create unlimited types of cover sheets. ms.cov is supposed to look like the ms cover sheet. .COVER requires a .COVEND at the end of the cover definition. Always use this order of the cover macros:

However, only .TL and .AU are required.

COVEND

Finish the cover description and print the cover page. It is defined in the cover file.

DE

Display end. Ends a block of text or display that begins with DS or DF.

DF [format [fill [rindent]]]

Begin floating display (no nesting allowed). A floating display is saved in a queue and is printed in the order entered. Format, fill, and rindent are the same as in DS. Floating displays are controlled by the two number registers De and Df.

De register

Df register

DL [text-indent [1 [1]]]

Dash list start. Begins a list where each item is printed after a dash. text-indent changes the default indentation of the list items set by number register Pi. A second argument prevents an empty line between each list item. See LI. A third argument prohibits printing of a blank line before each item.

DS [format [fill [rindent]]]

Static display start. Begins collection of text until DE. The text is printed together on the same page, unless it is longer than the height of the page. DS can be nested arbitrarily.

format

The values ‘L’, ‘I’, ‘C’, and ‘CB’ can also be specified as ‘0’, ‘1’, ‘2’, and ‘3’, respectively, for compatibility reasons.

fill

‘N’ and ‘F’ can also be specified as ‘0’ and ‘1’, respectively.

By default, an empty line is printed before and after the display. Setting number register Ds to 0 prevents this. rindent shortens the line length by that amount.

EC [title [override [flag [refname]]]]

Equation title. Sets a title for an equation. The override argument changes the numbering.

flag

EC uses the number register Ec as a counter. It is possible to use .af to change the format of the number. If number register Of is 1, the format of title uses a dash instead of a dot after the number.

The string Le controls the title of the List of Equations; default is ‘LIST OF EQUATIONS’. The List of Equations is only printed if number register Le is 1. The default is 0. The string Liec contains the word ‘Equation’, which is printed before the number. If refname is used, then the equation number is saved with .SETR, and can be retrieved with ‘.GETST refname’.

Special handling of the title occurs if EC is used inside DS/DE; it is not affected by the format of DS.

EF [arg]

Even-page footer, printed just above the normal page footer on even pages. See PF.

This macro defines string EOPef.

EH [arg]

Even-page header, printed just below the normal page header on even pages. See PH.

This macro defines string TPeh.

EN

Equation end, see EQ.

EOP

End-of-page user-defined macro. This macro is called instead of the normal printing of the footer. The macro is executed in a separate environment, without any trap active. See TP.

Strings available to EOP

EPIC [-L] width height [name]

Draw a box with the given width and height. It also prints the text name or a default string if name is not specified. This is used to include external pictures; just give the size of the picture. -L left-adjusts the picture; the default is to center. See PIC.

EQ [label]

Equation start. EQ/EN are the delimiters for equations written for eqn(1). EQ/EN must be inside of a DS/DE pair, except if EQ is used to set options for eqn only. The label argument appears at the right margin of the equation, centered vertically within the DS/DE block, unless number register Eq is 1. Then the label appears at the left margin.

If there are multiple EQ/EN blocks within a single DS/DE pair, only the last equation label (if any) is printed.

EX [title [override [flag [refname]]]]

Exhibit title. The arguments are the same as for EC. EX uses the number register Ex as a counter. The string Lx controls the title of the List of Exhibits; default is ‘LIST OF EXHIBITS’. The List of Exhibits is only printed if number register Lx is 1, which is the default. The string Liex contains the word ‘Exhibit’, which is printed before the number. If refname is used, the exhibit number is saved with .SETR, and can be retrieved with ‘.GETST refname’.

Special handling of the title occurs if EX is used inside DS/DE; it is not affected by the format of DS.

FC [closing]

Print ‘Yours very truly,’ as a formal closing of a letter or memorandum. The argument replaces the default string. The default is stored in string variable Letfc.

FD [arg [1]]

Footnote default format. Controls the hyphenation (hyphen), right margin justification (adjust), and indentation of footnote text (indent). It can also change the label justification (ljust).

An argument greater than or equal to 11 is considered as value 0. Default for mm is 10.

FE

Footnote end.

FG [title [override [flag [refname]]]]

Figure title. The arguments are the same as for EC. FG uses the number register Fg as a counter. The string Lf controls the title of the List of Figures; default is ‘LIST OF FIGURES’. The List of Figures is only printed if number register Lf is 1, which is the default. The string Lifg contains the word ‘Figure’, which is printed before the number. If refname is used, then the figure number is saved with .SETR, and can be retrieved with ‘.GETST refname’.

Special handling of the title occurs if FG is used inside DS/DE, it is not affected by the format of DS.

FS [label]

Footnote start. The footnote is ended by FE. By default, footnotes are automatically numbered; the number is available in string F. Just add \*F in the text. By adding label, it is possible to have other number or names on the footnotes. Footnotes in displays are now possible. An empty line separates footnotes; the height of the line is controlled by number register Fs, default value is 1.

GETHN refname [varname]

Include the header number where the corresponding ‘SETR refname’ was placed. This is displayed as ‘X.X.X.’ in pass 1. See INITR. If varname is used, GETHN sets the string variable varname to the header number.

GETPN refname [varname]

Include the page number where the corresponding ‘SETR refname’ was placed. This is displayed as ‘9999’ in pass 1. See INITR. If varname is used, GETPN sets the stringvariable varname to the page number.

GETR refname

Combine GETHN and GETPN with the text ‘chapter’ and ‘, page’. The string Qrf contains the text for the cross reference:

Qrf may be changed to support other languages. Strings Qrfh and Qrfp are set by GETR and contain the page and header number, respectively.

GETST refname [varname]

Include the string saved with the second argument to .SETR. This is a dummy string in pass 1. If varname is used, GETST sets it to the saved string. See INITR.

H level [heading-text [heading-suffix]]

Numbered section heading. Section headers can have a level between 1 and 14; level 1 is the top level. The text is given in heading-text, and must be surrounded by double quotes if it contains spaces. heading-suffix is added to the header in the text but not in the table of contents. This is normally used for footnote marks and similar things. Don't use \*F in heading-suffix, it doesn't work. A manual label must be used, see FS.

A call to the paragraph macro P directly after H is ignored. H takes care of spacing and indentation.

Page ejection before heading

Heading break level

Heading space level

Post-heading indent

Centered section headings

Font control of the heading

Point size control

Heading counters

Automatic table of contents

Special control of the heading, user-defined macros

HC [hyphenation-character]

Set hyphenation character. Default value is ‘\%’. Resets to the default if called without argument. Hyphenation can be turned off by setting number register Hy to 0 at the beginning of the file.

HM [arg1 [arg2 [... [arg14]]]]

Heading mark style. Controls the type of marking for printing of the heading counters. Default is 1 for all levels.

Argument

1	Arabic numerals.
0001	Arabic numerals with leading zeroes, one or more.
A	upper-case alphabetic
a	lower-case alphabetic
I	upper-case roman numerals
i	lower-case roman numerals
""	Arabic numerals.

HU heading-text

Unnumbered section header. HU behaves like H at the level in number register Hu. See H.

HX dlevel rlevel heading-text

User-defined heading exit. Called just before printing the header. See H.

HY dlevel rlevel heading-text

User-defined heading exit. Called just before printing the header. See H.

HZ dlevel rlevel heading-text

User-defined heading exit. Called just after printing the header. See H.

I [italic-text [prev-font-text [italic-text [...]]]]

Italic. Changes the font to italic if called without arguments. With one argument it sets the word in italic. With two arguments it concatenates them and sets the first word in italic and the second in the previous font. There is no limit on the number of argument; all are concatenated.

IA [addressee-name [title]]

Begin specification of the addressee and addressee's address in letter style. Several names can be specified with empty IA/IE-pairs, but only one address. See LT.

IB [italic-text [bold-text [italic-text [...]]]]

Italic-bold. Even arguments are printed in italic, odd in boldface. See I.

IE

End the address specification after IA.

INITI type filename [macro]

Initialize the new index system and set the filename to collect index lines in with IND. Argument type selects the type of index: page number, header marks or both. The default is page numbers.

It is also possible to create a macro that is responsible for formatting each row; just add the name of the macro as a third argument. The macro is then called with the index as argument(s).

type

N	Page numbers
H	Header marks
B	Both page numbers and header marks, separated with a tab character.

INITR filename

Initialize the cross reference macros. Cross references are written to stderr and are supposed to be redirected into file filename.qrf. Requires two passes with groff; this is handled by a separate program called mmroff(1). This program exists because groff(1) by default deactivates the unsafe operations that are required by INITR. The first pass looks for cross references, and the second one includes them. INITR can be used several times, but it is only the first occurrence of INITR that is active.

See also SETR, GETPN, and GETHN.

IND arg1 [arg2 [...]]

Write a line in the index file selected by INITI with all arguments and the page number or header mark separated by tabs.

INDP

Print the index by running the command specified by string variable Indcmd, which has ‘sort -t\t’ as the default value. INDP reads the output from the command to form the index, by default in two columns (this can be changed by defining TYIND). The index is printed with string variable Index as header, default is ‘INDEX’. One-column processing is reactivated after the list. INDP calls the user-defined macros TXIND, TYIND, and TZIND if defined. TXIND is called before printing the string ‘INDEX’, TYIND is called instead of printing ‘INDEX’, and TZIND is called after the printing and should take care of restoring to normal operation again.

ISODATE [0]

Change the predefined date string in DT to ISO-format, this is, ‘YYYY-MM-DD’. This can also be done by adding -rIso=1 on the command line. Reverts to old date format if argument is 0.

IR [italic-text [roman-text [italic-text [...]]]]

Italic-roman. Even arguments are printed in italic, odd in roman. See I.

LB text-indent mark-indent pad type [mark [LI-space [LB-space]]]

List-begin macro. This is the common macro used for all lists. text-indent is the number of spaces to indent the text from the current indentation.

pad and mark-indent control where to put the mark. The mark is placed within the mark area, and mark-indent sets the number of spaces before this area. By default it is 0. The mark area ends where the text begins. The start of the text is still controlled by text-indent.

The mark is left-justified within the mark area if pad is 0. If pad is greater than 0, mark-indent is ignored, and the mark is placed pad spaces before the text. This right-justifies the mark.

If type is 0 the list either has a hanging indentation or, if argument mark is given, the string mark as a mark.

If type is greater than 0 automatic numbering occurs, using arabic numbers if mark is empty. mark can then be any of ‘1’, ‘A’, ‘a’, ‘I’, or ‘i’.

type selects one of six possible ways to display the mark.

type

Every item in the list gets LI-space number of blank lines before them. Default is 1.

LB itself prints LB-space blank lines. Default is 0.

LC [list-level]

List-status clear. Terminates all current active lists down to list-level, or 0 if no argument is given. This is used by H to clear any active list.

LE [1]

List end. Terminates the current list. LE outputs a blank line if an argument is given.

LI [mark [1|2]]

List item preceding every item in a list. Without argument, LI prints the mark determined by the current list type. By giving LI one argument, it uses that as the mark instead. Two arguments to LI makes mark a prefix to the current mark. There is no separating space between the prefix and the mark if the second argument is ‘2’ instead of ‘1’. This behaviour can also be achieved by setting number register Limsp to zero. A zero length mark makes a hanging indentation instead.

A blank line is printed before the list item by default. This behaviour can be controlled by number register Ls. Pre-spacing occurs for each list level less than or equal to Ls. Default value is 99. There is no nesting limit.

The indentation can be changed through number register Li. Default is 6.

All lists begin with a list initialization macro, LB. There are, however, seven predefined list types to make lists easier to use. They all call LB with different default values.

These lists are described at other places in this manual. See also LB.

LT [arg]

Format a letter in one of four different styles depending on the argument. Also see section “Internals” below.

LO type [arg]

Specify options in letter (see .LT). This is a list of the standard options:

MC column-size [column-separation]

Begin multiple columns. Return to normal with 1C. MC creates as many columns as the current line length permits. column-size is the width of each column, and column-separation is the space between two columns. Default separation is column-size/15. See also 1C.

ML mark [text-indent [1]]

Marked list start. The mark argument is printed before each list item. text-indent sets the indent and overrides Li. A third argument prohibits printing of a blank line before each item.

MT [arg [addressee]]

Memorandum type. The argument arg is part of a filename in /usr/share/groff/1.22.4/tmac/mm/*.MT. Memorandum types 0 to 5 are supported, including type ‘string’ (which gets internally mapped to type 6). addressee just sets a variable, used in the AT&T macros.

arg

See also COVER/COVEND, a more flexible type of front page.

MOVE y-pos [x-pos [line-length]]

Move to a position, setting page offset to x-pos. If line-length is not given, the difference between current and new page offset is used. Use PGFORM without arguments to return to normal.

MULB cw1 space1 [cw2 space2 [cw3 ...]]

Begin a special multi-column mode. All columns widths must be specified. The space between the columns must be specified also. The last column does not need any space definition. MULB starts a diversion, and MULE ends the diversion and prints the columns. The unit for the width and space arguments is ‘n’, but MULB accepts all normal unit specifications like ‘c’ and ‘i’. MULB operates in a separate environment.

MULN

Begin the next column. This is the only way to switch the column.

MULE

End the multi-column mode and print the columns.

nP [type]

Print numbered paragraph with header level two. See .P.

NCOL

Force printing to the next column. Don't use this together with the MUL* macros, see 2C.

NS [arg [1]]

Print different types of notations. The argument selects between the predefined type of notations. If the second argument is available, then the argument becomes the entire notation. If the argument doesn't select a predefined type, it is printed as ‘Copy (arg) to’. It is possible to add more standard notations, see the string variables Letns and Letnsdef.

ND new-date

New date. Overrides the current date. Date is not printed if new-date is an empty string.

OF [arg]

Odd-page footer, a line printed just above the normal footer. See EF and PF.

This macro defines string EOPof.

OH [arg]

Odd-page header, a line printed just below the normal header. See EH and PH.

This macro defines string TPoh.

OP

Make sure that the following text is printed at the top of an odd-numbered page. Does not output an empty page if currently at the top of an odd page.

P [type]

Begin new paragraph. P without argument produces left-justified text, even the first line of the paragraph. This is the same as setting type to 0. If the argument is 1, the first line of text following P is indented by the number of spaces in number register Pi, by default 5.

Instead of giving an argument to P it is possible to set the paragraph type in number register Pt. Using 0 and 1 is the same as adding that value to P. A value of 2 indents all paragraphs, except after headings, lists, and displays (this value can't be used as an argument to P itself).

The space between two paragraphs is controlled by number register Ps, and is 1 by default (one blank line).

PGFORM [linelength [pagelength [pageoffset [1]]]]

Set line length, page length, and/or page offset. This macro can be used for special formatting, like letter heads and other. It is normally the first command in a file, though it is not necessary. PGFORM can be used without arguments to reset everything after a MOVE call. A line break is done unless the fourth argument is given. This can be used to avoid the page number on the first page while setting new width and length. (It seems as if this macro sometimes doesn't work too well. Use the command-line arguments to change line length, page length, and page offset instead.)

PGNH

No header is printed on the next page. Used to get rid of the header in letters or other special texts. This macro must be used before any text to inhibit the page header on the first page.

PIC [-B] [-L] [-C] [-R] [-I n] filename [width [height]]

Include a PostScript file in the document. The macro depends on mmroff(1) and INITR. The arguments -L, -C, -R, and -I n adjust the picture or indent it. With no flag the picture is adjusted to the left. Adding -B draws a box around the picture. The optional width and height can also be given to resize the picture.

PE

Picture end. Ends a picture for pic(1).

PF [arg]

Page footer. PF sets the line to be printed at the bottom of each page. Empty by default. See PH for the argument specification.

This macro defines string EOPf.

PH [arg]

Page header, a line printed at the top of each page. The argument should be specified as

where left-part, center-part, and right-part are printed left-justified, centered, and right justified, respectively. Within the argument to PH, the character ‘%’ is changed to the current page number. The default argument is

which gives the page number between two dashes.

This macro defines string TPh.

PS

Picture start (from pic). Begins a picture for pic(1).

PX

Page header user-defined exit. This macro is called just after the printing of the page header in no-space mode.

R

Roman. Return to roman font, see also I.

RB [roman-text [bold-text [roman-text [...]]]]

Roman-bold. Even arguments are printed in roman, odd in boldface. See I.

RD [prompt [diversion [string]]]

Read from standard input to diversion and/or string. The text is saved in a diversion named diversion. Recall the text by writing the name of the diversion after a dot on an empty line. A string is also defined if string is given. Diversion and/or prompt can be empty ("").

RF

Reference end. Ends a reference definition and returns to normal processing. See RS.

RI [roman-text [italic-text [roman-text [...]]]]

Print even arguments in roman, odd in italic. See I.

RL [text-indent[1]]

Reference list start. Begins a list where each item is preceded with an automatically incremented number between square brackets. text-indent changes the default indentation.

RP [arg1 [arg2]]

Produce reference page. This macro can be used if a reference page is wanted somewhere in the document. It is not needed if TC is used to produce a table of contents. The reference page is then printed automatically.

The reference counter is not reset if arg1 is 1.

arg2 tells RP whether to eject a page or not.

arg2

The reference items are separated by a blank line. Setting number register Ls to 0 suppresses the line.

The string Rp contains the reference page title and is set to ‘REFERENCES’ by default. The number register Rpe holds the default value for the second argument of RP; it is initially set to 0.

RS [string-name]

Begin an automatically numbered reference definition. Put the string \*(Rf where the reference mark should be and write the reference between RS/RF at next new line after the reference mark. The reference number is stored in number register :R. If string-name is given, a string with that name is defined and contains the current reference mark. The string can be referenced as \*[string-name] later in the text.

S [size [spacing]]

Set point size and vertical spacing. If any argument is equal to ‘P’, the previous value is used. A ‘C’ means current value, and ‘D’ the default value. If ‘+’ or ‘-’ is used before the value, the current value is incremented or decremented, respectively.

SA [arg]

Set right-margin justification. Justification is turned on by default. No argument or value ‘0’ turns off justification, and ‘1’ turns on justification.

SETR refname [string]

Remember the current header and page number as refname. Saves string if string is defined. string is retrieved with .GETST. See INITR.

SG [arg [1]]

Signature line. Prints the authors name(s) after the formal closing. The argument is appended to the reference data, printed at either the first or last author. The reference data is the location, department, and initials specified with .AU. It is printed at the first author if the second argument is given, otherwise at the last. No reference data is printed if the author(s) is specified through .WA/.WE. See section “Internals” below.

SK [pages]

Skip pages. If pages is 0 or omitted, a skip to the next page occurs unless it is already at the top of a page. Otherwise it skips pages pages.

SM string1 [string2 [string3]]

Make a string smaller. If string2 is given, string1 is made smaller and string2 stays at normal size, concatenated with string1. With three arguments, everything is concatenated, but only string2 is made smaller.

SP [lines]

Space vertically. lines can have any scaling factor, like ‘3i’ or ‘8v’. Several SP calls in a line only produces the maximum number of lines, not the sum. SP is ignored also until the first text line in a page. Add \& before a call to SP to avoid this.

TAB

Reset tabs to every 5n. Normally used to reset any previous tab positions.

TB [title [override [flag [refname]]]]

Table title. The arguments are the same as for EC. TB uses the number register Tb as a counter. The string Lt controls the title of the List of Tables; default value is ‘LIST OF TABLES’. The List of Tables is only printed if number register Lt is 1, which is the default. The string Litb contains the word ‘TABLE’, which is printed before the number.

Special handling of the title occurs if TB is used inside DS/DE, it is not affected by the format of DS.

TC [slevel [spacing [tlevel [tab [h1 [h2 [h3 [h4 [h5]]]]]]]]]

Table of contents. This macro is normally used as the last line of the document. It generates a table of contents with headings up to the level controlled by number register Cl. Note that Cl controls the saving of headings, it has nothing to do with TC. Headings with a level less than or equal to slevel get spacing number of lines before them. Headings with a level less than or equal to tlevel have their page numbers right-justified with dots or spaces separating the text and the page number. Spaces are used if tab is greater than zero, dots otherwise. Other headings have the page number directly at the end of the heading text (ragged-right).

The rest of the arguments is printed, centered, before the table of contents.

The user-defined macros TX and TY are used if TC is called with at most four arguments. TX is called before the printing of the string ‘CONTENTS’, and TY is called instead of printing ‘CONTENTS’.

Equivalent macros can be defined for list of figures, tables, equations and exhibits by defining TXxx or TYxx, where xx is ‘Fg’, ‘TB’, ‘EC’, or ‘EX’, respectively.

String Ci can be set to control the indentations for each heading-level. It must be scaled, like

By default, the indentation is controlled by the maximum length of headings in each level.

The string variables Lifg, Litb, Liex, Liec, and Licon contain ‘Figure’, ‘TABLE’, ‘Exhibit’, ‘Equation’, and ‘CONTENTS’, respectively. These can be redefined to other languages.

TE

Table end. See TS.

TH [N]

Table header. See TS. TH ends the header of the table. This header is printed again if a page break occurs. Argument ‘N’ isn't implemented yet.

TL [charging-case-number [filing-case-number]]

Begin title of memorandum. All text up to the next AU is included in the title. charging-case-number and filing-case-number are saved for use in the front page processing.

TM [num1 [num2 [...]]]

Technical memorandum numbers used in .MT. An unlimited number of arguments may be given.

TP

Top-of-page user-defined macro. This macro is called instead of the normal page header. It is possible to get complete control over the header. Note that the header and the footer are printed in a separate environment. Line length is preserved, though. See EOP.

strings available to TP

TS [H]

Table start. This is the start of a table specification to tbl(1). TS ends with TE. Argument ‘H’ tells mm that the table has a header. See TH.

TX

User-defined table of contents exit. This macro is called just before TC prints the word ‘CONTENTS’. See TC.

TY

User-defined table of contents exit. This macro is called instead of printing ‘CONTENTS’. See TC.

VERBON [flag [point-size [font]]]

Begin verbatim output using Courier font. Usually for printing programs. All characters have equal width. The point size can be changed with the second argument. By specifying a third argument it is possible to use another font instead of Courier. flag controls several special features. Its value is the sum of all wanted features.

VERBOFF

End verbatim output.

VL text-indent [mark-indent [1]]

Variable-item list. It has no fixed mark, it assumes that every LI has a mark instead. text-indent sets the indent to the text, and mark-indent the distance from the current indentation to the mark. A third argument prohibits printing of a blank line before each item.

VM [-T] [top [bottom]]

Vertical margin. Increase the top and bottom margin by top and bottom, respectively. If option -T is specified, set those margins to top and bottom. If no argument is given, reset the margin to zero, or to the default (‘7v 5v’) if -T is used. It is highly recommended that macros TP and/or EOP are defined if using -T and setting top and/or bottom margin to less than the default.

WA [writer-name [title]]

Begin specification of the writer and writer's address. Several names can be specified with empty WA/WE pairs, but only one address.

WE

End the address specification after .WA.

WC [format1] [format2] [...]

Footnote and display width control.

Strings used in mm

App

A string containing the word ‘APPENDIX’.

Apptxt

The current appendix text.

EM

Em dash string

H1txt

Updated by .H and .HU to the current heading text. Also updated in table of contents & friends.

HF

Font list for headings, ‘2 2 2 2 2 2 2’ by default. Non-numeric font names may also be used.

HP

Point size list for headings. By default, this is ’0 0 0 0 0 0 0’ which is the same as ‘10 10 10 10 10 10 10’.

Index

Contains the string ‘INDEX’.

Indcmd

Contains the index command. Default value is ‘sort -t\t’.

Lifg

String containing ‘Figure’.

Litb

String containing ‘TABLE’.

Liex

String containing ‘Exhibit’.

Liec

String containing ‘Equation’.

Licon

String containing ‘CONTENTS’.

Lf

Contains the string ‘LIST OF FIGURES’.

Lt

Contains the string ‘LIST OF TABLES’.

Lx

Contains the string ‘LIST OF EXHIBITS’.

Le

Contains the string ‘LIST OF EQUATIONS’.

Letfc

Contains the string ‘Yours very truly,’, used in .FC.

Letapp

Contains the string ‘APPROVED:’, used in .AV.

Letdate

Contains the string ‘Date’, used in .AV.

LetCN

Contains the string ‘CONFIDENTIAL’, used in .LO CN.

LetSA

Contains the string ‘To Whom It May Concern:’, used in .LO SA.

LetAT

Contains the string ‘ATTENTION:’, used in .LO AT.

LetSJ

Contains the string ‘SUBJECT:’, used in .LO SJ.

LetRN

Contains the string ‘In reference to:’, used in .LO RN.

Letns

is an array containing the different strings used in .NS. It is really a number of string variables prefixed with Letns!. If the argument doesn't exist, it is included between () with Letns!copy as a prefix and Letns!to as a suffix. Observe the space after ‘Copy’ and before ‘to’.

Letnsdef

Define the standard notation used when no argument is given to .NS. Default is 0.

MO1 – MO12

Strings containing the month names ‘January’ through ‘December’.

Qrf

String containing ‘See chapter \\*[Qrfh], page \\n[Qrfp].’.

Rp

Contains the string ‘REFERENCES’.

Tcst

Contains the current status of the table of contents and list of figures, etc. Empty outside of .TC. Useful in user-defined macros like .TP.

Tm

Contains the string ‘\(tm’, the trade mark symbol.

Verbnm

Argument to .nm in the .VERBON command. Default is 1.

Number variables used in mm

Aph

Print an appendix page for every new appendix if this number variable is non-zero. No output occurs if Aph is zero, but there is always an appendix entry in the ‘List of contents’.

Cl

Contents level (in the range 0 to 14). The contents is saved if a heading level is lower than or equal to the value of Cl. Default is 2.

Cp

Eject page between list of table, list of figure, etc., if the value of Cp is zero. Default is 0.

D

Debug flag. Values greater than zero produce debug information of increasing verbosity. A value of 1 gives information about the progress of formatting. Default is 0.

De

If set to 1, eject after floating display is output. Default is 0.

Dsp

If defined, it controls the space output before and after static displays. Otherwise the value of Lsp is used.

Df

Control floating keep output. This is a number in the range 0 to 5, with a default value of 5. See .DF.

Ds

If set to 1, use the amount of space stored in register Lsp before and after display. Default is 1.

Ej

If set to 1, eject page before each first-level heading. Default is 0.

Eq

Equation labels are left-adjusted if set to 0 and right-adjusted if set to 1. Default is 0.

Fs

Footnote spacing. Default is 1.

H1 – H7

Heading counters

H1dot

Append a dot after the level-one heading number if value is greater than zero. Default is 1.

H1h

A copy of number register H1, but it is incremented just before the page break. Useful in user-defined header macros.

Hb

Heading break level. A number in the range 0 to 14, with a default value of 2. See .H.

Hc

Heading centering level. A number in the range 0 to 14, with a default value value of 0. See .H.

Hi

Heading temporary indent. A number in the range 0 to 2, with a default value of 1.

Hps

Heading pre-space level. If the heading level is less than or equal to Hps, two lines precede the section heading instead of one. Default is first level only. The real amount of lines is controlled by the variables Hps1 and Hps2.

Hps1

Number of lines preceding .H if the heading level is greater than Hps. Value is in units, default is 0.5.

Hps2

Number of lines preceding .H if the heading level is less than or equal to Hps. Value is in units, default is 1.

Hs

Heading space level. A number in the range 0 to 14, with a default value of 2. See .H.

Hss

Number of lines following .H if the heading level is less than or equal to Hs. Value is in units, default is 1.

Ht

Heading numbering type.

Default is 0.

Hu

Unnumbered heading level. Default is 2.

Hy

Hyphenation status of text body.

Default is 0.

Iso

Set this variable to 1 on the command line to get an ISO-formatted date string (-rIso=1). Useless inside of a document.

L

Page length, only for command-line settings.

Letwam

Maximum lines in return-address, used in .WA/.WE. Default is 14.

Lf, Lt, Lx, Le

Enable (1) or disable (0) the printing of List of figures, List of tables, List of exhibits and List of equations, respectively. Default values are Lf=1, Lt=1, Lx=1, and Le=0.

Li

List indentation, used by .AL. Default is 6.

Limsp

A flag controlling the insertion of space between prefix and mark in automatic lists (.AL).

Ls

List space threshold. If current list level is greater than Ls no spacing occurs around lists. Default is 99.

Lsp

The vertical space used by an empty line. The default is 0.5v in troff mode and 1v in nroff mode.

N

Page numbering style.

Default is 0. See also the number registers Sectf and Sectp.

Np

A flag to control whether paragraphs are numbered.

Default is 0.

O

Page offset, only for command-line settings.

Of

Format of figure, table, exhibit, and equation titles.

Default is 0.

P

Current page-number, normally the same as ‘%’ unless ‘section-page’ numbering style is enabled.

Pi

Paragraph indentation. Default is 5.

Pgps

A flag to control whether header and footer point size should follow the current settings or just change when the header and footer are defined.

Ps

Paragraph spacing. Default is 1.

Pt

Paragraph type.

Default is 0.

Rpe

Set default value for second argument of .RP. Default is 0.

Sectf

A flag controlling ‘section-figures’ numbering style. A non-zero value enables this. See also register N.

Sectp

A flag controlling ’section-page’ numbering style. A non-zero value enables this. See also register N.

Si

Display indentation. Default is 5.

Verbin

Indentation for .VERBON. Default is 5n.

W

Line length, only for command-line settings.

.mgm

Always 1.