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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.
       .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
       .ULS		   unorder list begin
       .ULE		   unorder list end
       .LI		   insert a list item
       .DC		   generate a drop capital
       .HTML		   pass an html raw request to the
			   device driver

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

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

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

       URL    generates a URL using either 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 after‐
	      wards.   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    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, and 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    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    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    Include a picture into the document.  The first argument is  the
	      horizontal  location:  right,  left,  or center (-R, -L, or -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   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  Place  a	PNG  image on the margin and wrap text around it.  The
	      first parameter is the alignment: left or right (-L or -R).  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.

       HnS    Begin heading.  The heading level	 is  specified	by  the	 first
	      parameter.  Use this macro of your headings contain URLs.	 Exam‐
	      ple:

		     .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

       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.

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).

       HR     Generate a full-width horizontal rule.

       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.

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

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

FILES
       /usr/share/groff/1.18.1/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 1.18.1		   Nov	2003			  GROFF_WWW(7)
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