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GROFF_MM(7)							   GROFF_MM(7)

NAME
       groff_mm - groff mm macros

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

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.

       mgm is intended to support easy localization.  Use mgmse as an  example
       how  to	adapt  the  output  format  to a national standard.  Localized
       strings	   are	   collected	 in	the	 file	   `/opt/free‐
       ware/share/groff/1.21/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  num‐
       ber 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  num‐
       ber 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 mgm, 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 differ‐
       ent 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	 over‐
	      printed.

       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 con‐
	      tain 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 argu‐
	      ments 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	 over‐
	      rides  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  `/opt/freeware/share/groff/1.21/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.	  For‐
	      mat, 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,  giv‐
			 ing  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 dis‐
	      play.  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 geqn(1).  EQ/EN must be inside of a DS/DE pair, except if EQ
	      is  used	to  set	 options  for  geqn  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 mgm 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 `Fig‐
	      ure', 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, foot‐
	      notes 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.	 Foot‐
	      notes  in	 displays  are	now possible.  An empty line separates
	      footnotes; the height of the line is controlled by number regis‐
	      ter 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 var‐
	      name 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 head‐
	      ing-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 reg‐
		     ister 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 head‐
			 ing.

	      Centered section headings

		     All  headings whose level is equal or below number regis‐
		     ter Hc and also less than or equal to Hb or Hs  are  cen‐
		     terered.

	      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 print‐
		     ing.   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	regis‐
		     ter  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 fea‐
		     tures.  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	unnum‐
		     bered  headings.  Argument heading-text is the text argu‐
		     ment to H and HU.

		     HX level rlevel heading-text
			    This macro is called just before the  printing  of
			    the	 heading.   The following registers are avail‐
			    able 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 fol‐
				   low 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),  ver‐
				   tical  spacing  (}2),  and the needed space
				   after the heading.

		     HY dlevel rlevel heading-text
			    This macro is called after size and font  calcula‐
			    tions 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 argu‐
	      ments it concatenates them and sets the first word in italic and
	      the  second in the previous font.	 There is no limit on the num‐
	      ber 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 bold‐
	      face.  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	 argu‐
	      ment(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 `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 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 argu‐
	      ments 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 vari‐
	      able  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 con‐
	      trolled by text-indent.

	      The mark is left-justified whitin 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 ara‐
	      bic 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 argmuent 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 argu‐
	      ments to LI makes mark a prefix to the current mark.   There  is
	      no  separating space between the prefix and the mark if the sec‐
	      ond 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.	 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 spa‐
			   ces.
		     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 pre‐
			  fixed with `SUBJECT:' two  lines  below  the	inside
			  address,  except in letter type `SP', where the sub‐
			  ject 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
	      `/opt/freeware/share/groff/1.21/tmac/mm/*.MT'.  Memorandum types
	      0 to 5 are supported, including type `string' (which gets inter‐
	      nally  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  nor‐
	      mal.

       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 col‐
	      umn.

       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	 argu‐
	      ment  is	available,  then the argument becomes the entire nota‐
	      tion.  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 regis‐
	      ter 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 regis‐
	      ter 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 every‐
	      thing 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 off‐
	      set 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 gpic(@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  specifi‐
	      cation.

	      This macro defines string EOPf.

       PH [arg]
	      Page  header, a line printed at the top of each page.  The argu‐
	      ment 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 gpic(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	 bold‐
	      face.  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 nor‐
	      mal 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 brack‐
	      ets.  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.
			 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 num‐
	      ber 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 refer‐
	      enced 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, respec‐
	      tively.

       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	INTER‐
	      NALS.

       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 `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	 `CON‐
	      TENTS'.

	      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 head‐
	      ing-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
	      gtbl(1).	 TS ends with TE.  Argument `H' tells mgm that the ta‐
	      ble 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  con‐
			   trolled 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 mar‐
	      gins to top and bottom.  If no argument is given, reset the mar‐
	      gin 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 mgm
       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 mgm
       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-format‐
	      ted 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  ini‐
	      tialize 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.

AUTHOR
       J�rgen H�gg, Lund, Sweden <jh@axis.se>.

FILES
       /opt/freeware/share/groff/1.21/tmac/gm.tmac

       /opt/freeware/share/groff/1.21/tmac/mm/*.cov

       /opt/freeware/share/groff/1.21/tmac/mm/*.MT

       /opt/freeware/share/groff/1.21/tmac/mm/locale

SEE ALSO
       groff(1), gtroff(1), gtbl(1), gpic(1), geqn(1)
       groff_mmse(7)

Groff Version 1.21	       31 December 2010			   GROFF_MM(7)
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