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GROFF_MM(7)                                                                                                          GROFF_MM(7)



NAME
       groff_mm - groff mm macros

SYNOPSIS
       groff -mm [ options... ] [ files... ]

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

       o      No Bell Labs localisms are implemented.

       o      The macros OK and PM are not implemented.

       o      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 stan-
       dard.  Localized strings are collected in the file `/usr/share/groff/1.20.1/tmac/xx.tmac', where xx denotes the  two-let-
       ter  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  possi-
       ble 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  num-
              bers.

                     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  auto-
              matic  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 cur-
              rent 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 mar-
              gin 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  pro-
              hibits 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/1.20.1/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 indenta-
              tion  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 compatibil-
              ity 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 spec-
              ified.   This  is  used to include external pictures; just give the size of the picture.  -L left-adjusts the pic-
              ture; 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 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  indenta-
                                   tion.

                            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  speci-
                     fied 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  refence macros.  References are written to stderr and are supposed to be written to `file-
                     name.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 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 sep-
                     arated 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 regis-
                     ter  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.  See also section INTERNALS.

                            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 identifica-
                                  tion 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 saluta-
                                 tion 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/1.20.1/tmac/mm/*.MT'.  Memo-
                     randum 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 cur-
                     rent 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 para-
                     graph.  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 let-
                     ter 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 [-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.  The optional width and  height  can  also  be  given  to
                     resize the picture.

              PE     Picture end.  Ends a picture for pic(@MAN1EXT).

              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 automat-
                     ically.

                     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.  This is the default.
                            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.

              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 ref-
                     erence 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, other-
                     wise at the last.  No reference data is printed if the author(s) is specified through .WA/.WE.  See section
                     INTERNALS.

              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, con-
                     catenated  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  `TA-
                     BLE', 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 envi-
                     ronment.  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 begin-
                                  ning 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.  Adds extra vertical top and margin space.  Option -T sets the total space instead.  If no
                     argument is given, reset the margin to zero, or the default (`7v 5v') if -T has been  used.   It  is  higly
                     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 \"
                     Letns!to     " 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.

                     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 14

              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.

       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 let-
       ter type.  .LO then assigns the argument to the string variable let*lo-type.

AUTHOR
       Jorgen Hagg, Lund, Sweden <jhATaxis.se>.

FILES
       /usr/share/groff/1.20.1/tmac/m.tmac

       /usr/share/groff/1.20.1/tmac/mm/*.cov

       /usr/share/groff/1.20.1/tmac/mm/*.MT

       /usr/share/groff/1.20.1/tmac/mm/locale

SEE ALSO
       groff(1), troff(1), tbl(1), pic(1), eqn(1)
       groff_mmse(7)



Groff Version 1.20.1                                     21 January 2011                                             GROFF_MM(7)

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