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 docu-
ment 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 exam-
ple, 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. 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 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 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 argument, similar to the macros above, is
intended for stuff printed immediately afterwards. The second and the third param-
eter 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 ?#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:
.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 loca-
tion: 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 advis-
able 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
.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 ?#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 pack-
age 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 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 let-
ter.
LIMITATIONS OF GROHTML
tbl information is currently rendered as a PNG image.
FILES
/usr/share/groff/1.18.1.1/tmac/www.tmac
SEE ALSO
groff(1), troff(1) grohtml(1), netpbm(1)
AUTHOR
grohtml was written by Gaius Mulley ??
BUGS
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 1.18.1.1 15 April 2002 GROFF_WWW(7)
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