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GROFF_WWW(7)                                                      GROFF_WWW(7)

       groff_www - groff macros for authoring web pages

       groff -mwww [ options ] file ...

       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

       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.

       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 afterwards.  Hyphen-
              ation is disabled while printing the actual URL; explicit breakpoints should be  inserted  with  the  \:
              escape.  Here is how to encode foo <>;:

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

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

                     foo <>;:

              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 mandatory 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 <> was achieved by the following macro:

                     .MTO "Joe User"

              Note that all the URLs actually are treated as consuming no textual space in groff.  This could be  con-
              sidered as a bug since it causes some problems.  To circumvent this, www.tmac inserts a zero-width char-
              acter 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 argument, 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 <>;.  The macro
              example above was specified by:

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

       TAG    Generates an html name tag from its argument.  This can then be referenced using the URL  <#URL>  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:

                     .B URL
                     .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  working with postscript and html devices also since it can automatically 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.  Example:

                     .HnS 1
                     GNU Troff
                     .URL (Groff)
                     --- a
                     .URL GNU
                     Hosted by
                     .URL FFII .

       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.

       By default grohtml generates links to all section headings and places these at the top of  the  html  document.
       (See LINKS <#LK> 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 document 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 param-
              eter is the ajoining text whose height the first letter should not exceed.  The optional third parameter
              is the color of the dropped letter.

       tbl information is currently rendered as a PNG image.


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

       grohtml was written by Gaius Mulley <>

       Report bugs to the Groff Bug Mailing List <>.  Include a complete, self-contained example that
       will allow the bug to be reproduced, and say which version of groff you are using.

Groff Version           15 April 2002                    GROFF_WWW(7)