GROFF_WWW(7) - man - phpMan

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GROFF_WWW(7) Miscellaneous Information Manual GROFF_WWW(7)

NAME
groff_www - groff macros for authoring web pages

SYNOPSIS
groff -m www [option ...] [input-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 is automatically called (via the troffrc file) if you use -Thtml or -Txhtml.

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
.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 an HTML email address
.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
.ALN place links on left of main text.
.LNS start a new two-column table with links in the left.
.LNE end the two-column table.
.LINKSTYLE initialize default URL attributes.

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

tells grohtml that no heading links should be created at all. Another method for
turning automatic headings off is by issuing 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 or -Txhtml 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 mandatory as the email ad‐
dress. 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 AT user.org⟩ can be achieved by the following
macro:

.MTO joe AT user.org "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 or -Txhtml).

.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 argument, similar to the macros above, is in‐
tended 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 is the location of the GNU FTP server ⟨ftp://ftp.gnu.org/⟩. The macro example
above can be specified as:

.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 ⟨#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 [-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 ab‐
sent 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 working with PostScript and HTML devices also since
it can automatically convert the image into the EPS format, using the following pro‐
grams of the netpbm package: pngtopnm, pnmcrop, and pnmtops. If the document isn't
processed with -Thtml or -Txhtml 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 op‐
tional. The alignment: left or right (-L or -R) specifies the margin where the pic‐
ture 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 de‐
fault 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 PostScript device calcu‐
lates the width from the .l register and the height from the .p register. For exam‐
ple:

.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 headings. 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 or -Txhtml those links can be seen right
here.

.HR Generate a full-width horizontal rule for -Thtml and -Txhtml. 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 ti‐
tle as search engine fodder but a graphic title in the document. The macro terminates
when a space or break is seen (.sp, .br).

.HEAD Add arbitrary HTML data to the <head> block. Ignored if not processed with -Thtml or
-Txhtml. 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 document is processed with‐
out -Thtml or -Txhtml 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 adjoining text whose height the first letter should
not exceed. The optional third parameter is the color of the dropped letter. It de‐
faults to black.

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

.CDE End code display

.ALN [color] [percentage]
Place section heading links automatically to the left of the main text. The color ar‐
gument is optional and if present indicates which HTML background color is to be used
under the links. The optional percentage indicates the amount of width to devote to
displaying the links. The default values are #eeeeee and 30 for color and percentage
width, respectively. This macro should only be called once at the beginning of the
document. After calling this macro each section heading emits an HTML table consist‐
ing of the links in the left and the section text on the right.

.LNS Start a new two-column table with links in the left column. This can be called if the
document has text before the first .SH and if .ALN is used. Typically this is called
just before the first paragraph and after the main title as it indicates that text af‐
ter this point should be positioned to the right of the left-hand navigational links.

.LNE End a two-column table. This should be called at the end of the document if .ALN was
used.

.LINKSTYLE color [ fontstyle [ openglyph closeglyph ] ]
Initialize default URL attributes to be used if this macro set is not used with the
HTML device. The macro set initializes itself with the following call

.LINKSTYLE blue CR \[la] \[ra]

but these values will be superseded by a user call to LINKSTYLE.

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 posi‐
tion).

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

FILES
/usr/share/groff/1.22.4/tmac/www.tmac

AUTHORS
The www macro package was written by Gaius Mulley ⟨gaius AT glam.uk⟩, with additions by
Werner Lemberg ⟨wl AT gnu.org⟩ and Bernd Warken ⟨groff-bernd.warken-72 AT web.de⟩.

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

groff 1.22.4 23 March 2022 GROFF_WWW(7)