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GROFF_WWW(7)							  GROFF_WWW(7)

NAME
       groff_www - groff macros for authoring web pages

SYNOPSIS
       groff -mwww [ options ] file ...

DESCRIPTION
       This  manual  page describes the GNU -mwww macro package, which is part
       of the groff document formatting system.	 The manual  page  is  very  a
       basic  guide,  and the html device driver (grohtml) has been completely
       rewritten but still remains as in an alpha state.  It has been included
       into the distribution so that a lot of people have a chance to test it.
       Note that this macro file will be automatically called (via the troffrc
       file) if you use -Thtml.

       To  see	the hyperlinks in action, please format this man page with the
       grohtml device.

       Here is a summary of the functions found in this macro set.
       .JOBNAME		   split output into multiple files
       .HX		   automatic heading level cut off;
			   $1 point for sections/headers
       .BCL		   specify colours on a web page
       .BGIMG		   specify background image
       .URL		   create a url using two parameters
       .FTP		   create an ftp reference
       .MTO		   create a html email address
       .FTP		   create an ftp reference
       .TAG		   generate an html name
       .IMG		   include an image file
       .PIMG		   include png image
       .MPIMG		   place png on the margin and
			   wrap text around it
       .HnS		   begin heading
       .HnE		   end heading
       .LK		   emit automatically collected links.
       .HR		   produce a horizontal rule
       .NHR		   suppress automatic generation of rules.
       .HTL		   only generate HTML title
       .HEAD		   add data to <head> block
       .ULS		   unorder list begin
       .ULE		   unorder list end
       .OLS		   ordered list begin
       .OLE		   ordered list end
       .DLS		   definition list begin
       .DLE		   definition list end
       .LI		   insert a list item
       .DC		   generate a drop capital
       .HTML		   pass an html raw request to the
			   device driver
       .CDS		   code example begin
       .CDE		   code example end

       Output of the pic, eqn, refer, and tbl preprocessors is	acceptable  as
       input.

REQUESTS
       .JOBNAME filename
	      Split output into multiple HTML files.  A file is split whenever
	      a .SH or .NH 1 is encountered.  Its argument is  the  file  stem
	      name  for	 future	 output	 files.	  This option is equivalent to
	      grohtml's -j option.

       .HX n  Specify the cut off depth when  generating  links	 from  section
	      headings.	  For example, a parameter of 2 would cause grohtml to
	      generate a list of links for .NH 1 and .NH 2 but not for	.NH 3.
	      Whereas

		     .HX 0

	      will  tell  grohtml  that	 no heading links should be created at
	      all.  Another method for turning automatic headings  off	is  by
	      issuing the the command line switch -P-l to groff.

       .BCL foreground background active not-visited visited
	      This macro takes five parameters: foreground, background, active
	      hypertext link, hypertext link  not  yet	visited,  and  visited
	      hypertext link colour.

       .BGIMG imagefile
	      the only parameter to this macro is the background image file.

       .URL url [description] [after]
	      generates	 a  URL using either one, two or three arguments.  The
	      first parameter is the actual URL, the second is the name of the
	      link,  and the third is optional stuff to be printed immediately
	      afterwards.  If description and after are absent	then  the  url
	      becomes the anchor text.	Hyphenation is disabled while printing
	      the actual URL; explicit breakpoints should be inserted with the
	      \: escape.  Here is how to encode foo ⟨http://foo.org/⟩:

		     .URL http://\:foo.\:org/ foo :

	      If  this	is  processed by a device other than -Thtml it appears
	      as:

		     foo ⟨http://foo.org⟩:

	      The URL macro can be of any type; for example we can reference
	      Eric Raymond's pic guide ⟨pic.html⟩ by:

		     .URL pic.html "Eric Raymond's pic guide"

       .MTO address [description] [after]
	      Generate	an email html reference.  The first argument is manda‐
	      tory as the email address.  The optional second argument is  the
	      text  you	 see  in  your	browser If an empty argument is given,
	      address is used instead.	An optional third  argument  is	 stuff
	      printed  immediately  afterwards.	 Hyphenation is disabled while
	      printing the  actual  email  address.   For  example,  Joe  User
	      ⟨joe@user.org⟩ was achieved by the following macro:

		     .MTO joe@user.org "Joe User"

	      Note that all the URLs actually are treated as consuming no tex‐
	      tual space in groff.  This could be considered as a bug since it
	      causes  some  problems.	To circumvent this, www.tmac inserts a
	      zero-width character which expands to a harmless space (only  if
	      run with -Thtml).

       .FTP url [description] [after]
	      indicates that data can be obtained via ftp.  The first argument
	      is the url and the second is the browser text.   A  third	 argu‐
	      ment, similar to the macros above, is intended for stuff printed
	      immediately afterwards.  The second and the third parameter  are
	      optional.	  Hyphenation  is  disabled  while printing the actual
	      URL.  As an example, here the location of the GNU ftp server
	      ⟨ftp://ftp.gnu.org/⟩.  The macro example above was specified by:

		     .FTP ftp://\:ftp.gnu.org/ "GNU ftp server" .

       .TAG name
	      Generates	 an html name tag from its argument.  This can then be
	      referenced using the URL ⟨0⟩ macro.  As you can  see,  you  must
	      precede the tag name with # since it is a local reference.  This
	      link was achieved via placing  a	TAG  in	 the  URL  description
	      above; the source looks like this:

		     .TP
		     .B URL
		     generates
		     .TAG URL
		     a URL using either two or three arguments.
		     ...

       .IMG [-R|-L|-C] filename [width] [height]
	      Include  a picture into the document.  The first argument is the
	      horizontal location: right, left, or center  (-R,	 -L,  or  -C).
	      Alignment	 is  centered by default (-C).	The second argument is
	      the filename.  The optional third and fourth arguments  are  the
	      width and height.	 If the width is absent it defaults to 1 inch.
	      If the height is absent it defaults to  the  width.   This  maps
	      onto  an html img tag.  If you are including a png image then it
	      is advisable to use the PIMG macro.

       .PIMG [-R|-L|-C] filename [width [height]]
	      Include an image in PNG format.  This macro  takes  exactly  the
	      same  parameters as the IMG macro; it has the advantage of work‐
	      ing with postscript and html devices also since it can automati‐
	      cally convert the image into the EPS format, using the following
	      programs of the netpbm package: pngtopnm, pnmcrop, and  pnmtops.
	      If  the  document isn't processed with -Thtml it is necessary to
	      use the -U option of groff.

       .MPIMG [-R|-L] [-G gap] filename [width [height]]
	      Place a PNG image on the margin and wrap text  around  it.   The
	      first parameters are optional.  The alignment: left or right (-L
	      or -R) specifies the margin where the picture is placed at.  The
	      default  alignment is left (-L).	Optionally, -G gap can be used
	      to arrange a gap between the picture and	the  text  that	 wraps
	      around it.  The default gap width is zero.
	      The  first  non-optional argument is the filename.  The optional
	      following arguments are the width and height.  If the  width  is
	      absent  it  defaults  to	1  inch.   If  the height is absent it
	      defaults to the width.  Example:

		     .MPIMG -L -G 2c foo.png 3c 1.5c

	      The height and width may also be given as percentages. The Post‐
	      Script  device calculates the width from the .l register and the
	      height from the .p register. For example:

		     .MPIMG -L -G 2c foo.png 15%

       .HnS n Begin heading.  The numeric heading level n is specified by  the
	      first  parameter.	  Use this macro if your headings contain URL,
	      FTP or MTO macros.  Example:

		     .HnS 1
		     .HR
		     GNU Troff
		     .URL http://groff.ffii.org (Groff)
		     — a
		     .URL http://www.gnu.org/ GNU
		     project.
		     Hosted by
		     .URL http://ffii.org/ FFII .
		     .HR
		     .HnE

	      In this case you might wish to disable automatic links to	 head‐
	      ings.  This can be done via -P-l from the command line.

       .HnE   End heading.

       .LK    Force grohtml to place the automatically generated links at this
	      position.	 If this manual page has been  processed  with	-Thtml
	      those links can be seen right here.

       .HR    Generate a full-width horizontal rule for -Thtml.	 No effect for
	      all other devices.

       .NHR   Suppress generation of the top and bottom	 rules	which  grohtml
	      emits by default.

       .HTL   Generate	an HTML title only.  This differs from the TL macro of
	      the ms macro package which generates both an HTML title  and  an
	      <H1>  heading.  Use it to provide an HTML title as search engine
	      fodder but a graphic title in the document.   The	 macro	termi‐
	      nates when a space or break is seen (.sp, .br).

       .HEAD  Add  arbitrary  HTML  data  to the <head> block.	Ignored if not
	      processed with -Thtml.  Example:

		     .HEAD "<link \
		       rel=""icon"" \
		       type=""image/png"" \
		       href=""http://foo.org//bar.png""/>"

       .HTML  All text after this macro is treated as raw html.	 If the	 docu‐
	      ment  is	processed  without  -Thtml  then the macro is ignored.
	      Internally, this macro is used as a  building  block  for	 other
	      higher-level macros.

	      For example, the BGIMG macro is defined as

		     .de BGIMG
		     .	 HTML <body background=\$1>
		     ..

       .DC l text [color]
	      Produce a drop capital.  The first parameter is the letter to be
	      dropped and enlarged, the second parameter text is the  ajoining
	      text  whose  height  the	first  letter  should not exceed.  The
	      optional third parameter is the color of the dropped letter.  It
	      defaults to black.

       .CDS   Start displaying a code section in constant width font.

       .CDE   End code display

SECTION HEADING LINKS
       By  default  grohtml generates links to all section headings and places
       these at the top of the html document. (See LINKS ⟨0⟩  for  details  of
       how to switch this off or alter the position).

LIMITATIONS OF GROHTML
       tbl information is currently rendered as a PNG image.

FILES
       /usr/share/tmac/www.tmac

SEE ALSO
       groff(1), troff(1) grohtml(1), netpbm(1)

AUTHOR
       grohtml was written by Gaius Mulley ⟨gaius@glam.ac.uk⟩

BUGS
       Report bugs to the Groff Bug Mailing List ⟨bug-groff@gnu.org⟩.  Include
       a complete, self-contained example that will allow the bug to be repro‐
       duced, and say which version of groff you are using.

Groff Version 1.19.2		20 October 2005			  GROFF_WWW(7)
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