макросы GNU roff для создания веб-страниц (GNU roff macros for authoring web pages)
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 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⟩ can be
achieved by the following macro:
.MTO joe@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 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 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 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 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 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 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 PostScript 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 https://\:www\:.gnu\:.org/\:software/\:groff/
\[em]a
.URL http://www\:.gnu\:.org/ GNU
project.
.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.
.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
title 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 without -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 defaults 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 argument 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 consisting 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 after 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.
