Provided by: groff_1.22.4-4build1_amd64 bug

NAME

       groff_mm - memorandum macros for GNU roff

SYNOPSIS

       groff -mm [option ...] [file ...]
       groff -m mm [option ...] [file ...]

DESCRIPTION

       The groff mm macros are intended to be compatible with the DWB mm macros with the following limitations:

             No Bell Labs localisms are implemented.

             The macros OK and PM are not implemented.

             groff mm does not support cut marks.

       mm  is intended to support easy localization.  Use mmse as an example how to adapt the output format to a
       national standard.  Localized strings are collected  in  the  file  /usr/share/groff/1.22.4/tmac/xx.tmac,
       where  xx denotes the two-letter code for the language, as defined in the ISO 639 standard.  For Swedish,
       this is ‘sv.tmac’ – not ‘se’, which is the ISO 3166 two-letter code for the  country  (as  used  for  the
       output format localization).

       A  file  called locale or country_locale is read after the initialization of the global variables.  It is
       therefore possible to localize the macros with a different company name and so on.

       In this manual, square brackets are used to show optional arguments.

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

              .nr XXX [±]n [i]

       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.

              .ds YYY string

       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:

              .af R c

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

              Form   Sequence
              1      0, 1, 2, 3, ...
              001    000, 001, 002, 003, ...
              i      0, i, ii, iii, iv, ...
              I      0, I, II, III, IV, ...
              a      0, a, b, c, ..., z, aa, ab, ...
              A      0, A, B, C, ..., Z, AA, AB, ...

   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.

                     Arg   Description
                     1     Arabic (the default)
                     A     Upper-case letters (A–Z)
                     a     Lower-case letters (a–z)
                     I     Upper-case roman
                     i     Lower-case roman

              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.

              Arg   Placement
              0     Abstract is printed on page 1 and on the cover sheet if used in the released-paper style (MT
                    4), otherwise it is printed on page 1 without a cover sheet.
              1     Abstract is only printed on the cover sheet (MT 4 only).
              2     Abstract is printed only on the cover sheet (other than MT 4  only).   The  cover  sheet  is
                    printed without a need for CS.

              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:

                     .COVER
                     .TL
                     .AF
                     .AU
                     .AT
                     .AS
                     .AE
                     .COVEND

              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

                     0   Nothing special, this is the default.
                     1   A page eject occurs after each printed display, giving only one display per page and no
                         text following it.

              Df register

                     0   Displays are printed at the end of each section (when section-page numbering is active)
                         or at the end of the document.
                     1   A new display is printed on the current page if there is enough space, otherwise it  is
                         printed at the end of the document.
                     2   One display is printed at the top of each page or column (in multi-column mode).
                     3   Print  one  display if there is enough space for it, otherwise it is printed at the top
                         of the next page or column.
                     4   Print as many displays as possible in a new  page  or  column.   A  page  break  occurs
                         between each display if De is not zero.
                     5   Fill  the  current  page  with displays and the rest beginning at a new page or column.
                         (This is the default.)  A page break occurs between each display if De is not zero.

       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

                     ""     No indentation.
                     none   No indentation.
                     L      No indentation.
                     I      Indent text with the value of number register Si.
                     C      Center each line.
                     CB     Center the whole display as a block.
                     R      Right-adjust the lines.
                     RB     Right-adjust the whole display as a block.

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

              fill

                     ""     Line-filling turned off.
                     none   Line-filling turned off.
                     N      Line-filling turned off.
                     F      Line-filling turned on.

              ‘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

                     none   override is a prefix to the number.

                     0      override is a prefix to the number.
                     1      override is a suffix to the number.
                     2      override replaces the number.

              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

              EOPf    argument of PF
              EOPef   argument of EF
              EOPof   argument of OF

       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).

                     arg   hyphen   adjust   indent   ljust
                     0     no       yes      yes      left
                     1     yes      yes      yes      left
                     2     no       no       yes      left
                     3     yes      no       yes      left
                     4     no       yes      no       left
                     5     yes      yes      no       left
                     6     no       no       no       left
                     7     yes      no       no       left
                     8     no       yes      yes      right
                     9     yes      yes      yes      right
                     10    no       no       yes      right
                     11    yes      no       yes      right

              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:

                     .ds Qrf See chapter \\*[Qrfh], page \\*[Qrfp].

              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

                     Number  register  Ej  controls  page  ejection before the heading.  By default, a level-one
                     heading gets two blank lines before it; higher levels only get one.  A new page is  ejected
                     before  each first-level heading if number register Ej is 1.  All levels below or equal the
                     value of Ej get a new page.  Default value for Ej is 0.

              Heading break level

                     A line break occurs after the heading if the heading level  is  less  or  equal  to  number
                     register Hb.  Default value is 2.

              Heading space level

                     A  blank line is inserted after the heading if the heading level is less or equal to number
                     register Hs.  Default value is 2.

                     Text follows the heading on the same line if the level is greater than both Hb and Hs.

              Post-heading indent

                     Indentation of the text after the heading is controlled by  number  register  Hi.   Default
                     value is 0.

                     Hi

                     0   The text is left-justified.
                     1   Indentation of the text follows the value of number register Pt , see P.
                     2   The text is lined up with the first word of the heading.

              Centered section headings

                     All  headings  whose level is equal or below number register Hc and also less than or equal
                     to Hb or Hs are centered.

              Font control of the heading

                     The font of each heading level is controlled by string HF.  It contains a  font  number  or
                     font name for each level.  Default value is

                            2 2 2 2 2 2 2 2 2 2 2 2 2 2

                     (all headings in italic).  This could also be written as

                            I I I I I I I I I I I I I I

                     Note  that  some other implementations use 3 3 2 2 2 2 2 as the default value.  All omitted
                     values are presumed to have value 1.

              Point size control

                     String HP controls the point size of each heading, in the same way as HF controls the font.
                     A value of 0 selects the default point size.  Default value is

                            0 0 0 0 0 0 0 0 0 0 0 0 0 0

                     Beware  that  only  the  point  size  changes,  not  the  vertical size.  The latter can be
                     controlled by the user-specified macros HX and/or HZ.

              Heading counters

                     Fourteen number registers named H1 up to H14 contain the counter for  each  heading  level.
                     The  values  are  printed using Arabic numerals; this can be changed with the macro HM (see
                     below).  All marks are concatenated before printing.  To avoid this, set number register Ht
                     to 1.  This only prints the current heading counter at each heading.

              Automatic table of contents

                     All  headings  whose  level is equal or below number register Cl are saved to be printed in
                     the table of contents.  Default value is 2.

              Special control of the heading, user-defined macros

                     The following macros can be defined by the user to get a finer control of vertical spacing,
                     fonts,  or other features.  Argument level is the level-argument to H, but 0 for unnumbered
                     headings (see HU).  Argument rlevel is the real level; it is set to number register Hu  for
                     unnumbered headings.  Argument heading-text is the text argument to H and HU.

                     HX level rlevel heading-text
                            This  macro  is  called  just  before  the  printing  of the heading.  The following
                            registers are available for HX.  Note that HX may alter }0, }2, and ;3.

                            }0 (string)
                                   Contains the heading mark plus two spaces if rlevel  is  non-zero,  otherwise
                                   empty.

                            ;0 (register)
                                   Contains  the  position of the text after the heading.  0 means that the text
                                   should follow the heading on the same line, 1 means that a line break  should
                                   occur  before  the  text,  and  2 means that a blank line should separate the
                                   heading and the text.

                            }2 (string)
                                   Contains two spaces if register ;0 is 0.  It is used to separate the  heading
                                   from the text.  The string is empty if ;0 is non-zero.

                            ;3 (register)
                                   Contains the needed space in units after the heading.  Default is 2v.  Can be
                                   used to change things like numbering (}0), vertical  spacing  (}2),  and  the
                                   needed space after the heading.

                     HY dlevel rlevel heading-text
                            This  macro  is  called after size and font calculations and might be used to change
                            indentation.

                     HZ dlevel rlevel heading-text
                            This macro is called after the printing of the heading, just before H or  HU  exits.
                            Can be used to change the page header according to the section heading.

       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.

                     Examples

                     arg1\tpage number
                     arg1\targ2\tpage number
                     arg1\theader mark
                     arg1\tpage number\theader mark

       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

                     1   x.
                     2   x)
                     3   (x)
                     4   [x]
                     5   <x>
                     6   {x}

              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.

                     AL    Automatically Incremented List
                     ML    Marked List
                     VL    Variable-Item List
                     BL    Bullet List
                     DL    Dash List
                     RL    Reference List
                     BVL   Broken Variable List.

              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.

                     Arg   Style

                     BL    Blocked.  Date line, return address, writer's  address  and  closing  begins  at  the
                           center of the line.  All other lines begin at the left margin.
                     SB    Semi-blocked.   Same  as  blocked,  except  that the first line in every paragraph is
                           indented five spaces.
                     FB    Full-blocked.  All lines begin at the left margin.
                     SP    Simplified.  Almost the same as the full-blocked style.   Subject  and  the  writer's
                           identification are printed in all-capital.

       LO type [arg]
              Specify options in letter (see .LT).  This is a list of the standard options:

                     CN   Confidential  notation.  Prints ‘CONFIDENTIAL’ on the second line below the date line.
                          Any argument replaces ‘CONFIDENTIAL’.  See also string variable LetCN.
                     RN   Reference notation.  Prints ‘In reference to:’ and the argument two  lines  below  the
                          date line.  See also string variable LetRN.
                     AT   Attention.   Prints  ‘ATTENTION:’ and the argument below the inside address.  See also
                          string variable LetAT.
                     SA   Salutation.  Prints ’To Whom It May Concern:’ or the argument if it was present.   The
                          salutation  is  printed  two lines below the inside address.  See also string variable
                          LetSA.
                     SJ   Subject line.  Prints the argument as subject prefixed with ‘SUBJECT:’ two lines below
                          the  inside  address, except in letter type ‘SP’, where the subject is printed in all-
                          capital without any prefix.  See also string variable LetSJ.

       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

                     0   Normal memorandum, no type printed.
                     1   Memorandum with ‘MEMORANDUM FOR FILE’ printed.
                     2   Memorandum with ‘PROGRAMMER'S NOTES’ printed.
                     3   Memorandum with ‘ENGINEER'S NOTES’ printed.
                     4   Released paper style.
                     5   External letter style.

              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.

                     Arg    Notation
                     none   Copy To
                     ""     Copy To
                     1      Copy To (with att.) to
                     2      Copy To (without att.) to
                     3      Att.
                     4      Atts.
                     5      Enc.
                     6      Encs.
                     7      Under separate cover
                     8      Letter to
                     9      Memorandum to
                     10     Copy (with atts.) to
                     11     Copy (without atts.) to
                     12     Abstract Only to
                     13     Complete Memorandum to
                     14     CC

       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

                     "'left-part'center-part'right-part'"

              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

                     0   The reference page is printed on a separate page.
                     1   Do not eject page after the list.
                     2   Do not eject page before the list.
                     3   Do not eject page before and after the list.

              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

                     .ds Ci .25i .5i .75i 1i 1i

              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

              TPh    argument of PH
              TPeh   argument of EH
              TPoh   argument of OH

       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.

                     Arg   Description
                     1     Disable the escape character (\).  This is normally turned on during verbose output.
                     2     Add an empty line before the verbose text.
                     4     Add an empty line after the verbose text.
                     8     Print the verbose text with numbered lines.  This adds four digit-sized spaces in the
                           beginning of each line.  Finer control is available with the string variable  Verbnm.
                           It contains all arguments to the troff(1) command .nm, normally ‘1’.
                     16    Indent  the  verbose  text by ‘5n’.  This is controlled by the number-variable Verbin
                           (in units).

       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.

              N     Set default mode which is equal to using the options -WF, -FF, -WD, and FB.
              WF    Wide footnotes, wide also in two-column mode.
              -WF   Normal footnote width, follow column mode.
              FF    All footnotes gets the same width as the first footnote encountered.
              -FF   Normal footnotes, width follows WF and -WF.
              WD    Wide displays, wide also in two-column mode.
              -WD   Normal display width, follow column mode.
              FB    Floating displays generates a line break when printed on the current page.
              -FB   Floating displays does not generate line break.

   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’.

                     Name         Value
                     Letns!0      Copy to
                     Letns!1      Copy (with att.) to
                     Letns!2      Copy (without att.) to
                     Letns!3      Att.
                     Letns!4      Atts.
                     Letns!5      Enc.
                     Letns!6      Encs.
                     Letns!7      Under separate cover
                     Letns!8      Letter to
                     Letns!9      Memorandum to
                     Letns!10     Copy (with atts.) to
                     Letns!11     Copy (without atts.) to
                     Letns!12     Abstract Only to
                     Letns!13     Complete Memorandum to
                     Letns!14     CC
                     Letns!copy   Copy (with trailing space)
                     Letns!to      to (note leading space)

       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.

                     Value   Meaning
                     co      Table of contents
                     fg      List of figures
                     tb      List of tables
                     ec      List of equations
                     ex      List of exhibits
                     ap      Appendix

       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.

                     0   no indentation, left margin
                     1   indent to the right, similar to ‘.P 1’
                     2   indent to line up with text part of preceding heading

       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.

                     0   multiple levels (1.1.1, 1.1.2, etc.)
                     1   single level

              Default is 0.

       Hu     Unnumbered heading level.  Default is 2.

       Hy     Hyphenation status of text body.

                     0   no hyphenation
                     1   hyphenation on, set to value 6

              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).

                     0   no space

                     1   emit space

       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.

                     0   normal header for all pages.
                     1   header replaces footer on first page, header is empty.
                     2   page header is removed on the first page.
                     3   ‘section-page’ numbering style enabled.
                     4   page header is removed on the first page.
                     5   ‘section-page’ and ‘section-figure’ numbering style enabled.

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

       Np     A flag to control whether paragraphs are numbered.

                     0   not numbered
                     1   numbered in first-level headings.

              Default is 0.

       O      Page offset, only for command-line settings.

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

                     0   ". "
                     1   " - "

              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.

                     0   Point size only changes to the current setting when .PH, .PF, .OH, .EH, .OF, or .OE  is
                         executed.
                     1   Point size changes after every .S.  This is the default.

       Ps     Paragraph spacing.  Default is 1.

       Pt     Paragraph type.

                     0   left-justified
                     1   indented paragraphs
                     2   indented paragraphs except after .H, .DE, or .LE.

              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.

INTERNALS

       The  letter  macros are using different submacros depending on the letter type.  The name of the submacro
       has the letter type as suffix.  It is therefore possible to define other  letter  types,  either  in  the
       national  macro-file,  or  as  local  additions.   .LT  sets  the  number variables Pt and Pi to 0 and 5,
       respectively.  The following strings and macros must be defined for a new letter type.

       let@init_type
              This macro is called directly by .LT.  It is supposed to initialize variables and other stuff.

       let@head_type
              This macro prints the letter head, and is called  instead  of  the  normal  page  header.   It  is
              supposed to remove the alias let@header, otherwise it is called for all pages.

       let@sg_type name title n flag [arg1 [arg2 [...]]]
              .SG  is  calling this macro only for letters; memorandums have its own processing.  name and title
              are specified through .WA/.WB.  n is the counter, 1-max, and flag is true for the last name.   Any
              other argument to .SG is appended.

       let@fc_type closing
              This macro is called by .FC, and has the formal closing as the argument.

       .LO  is  implemented as a general option-macro.  It demands that a string named Lettype is defined, where
       type is the letter type.  .LO then assigns the argument to the string variable let*lo-type.

FILES

       /usr/share/groff/1.22.4/tmac/m.tmac

       /usr/share/groff/1.22.4/tmac/mm/*.cov

       /usr/share/groff/1.22.4/tmac/mm/*.MT

       /usr/share/groff/1.22.4/tmac/mm/locale

AUTHORS

       The GNU version of the mm macro package was written by Jörgen Hägg ⟨jh@axis.se⟩ of Lund, Sweden.

SEE ALSO

       groff(1), troff(1), tbl(1), pic(1), eqn(1)
       groff_mmse(7) (only in Swedish locales)