Provided by: groff_1.22.4-6_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)