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       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 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 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
       .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


       .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.

                     .HX 0

              tells  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 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 〈〉:

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

              If this is processed by a device other than -Thtml or -Txhtml 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 Raymonds 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
              〈〉 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 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 the location of the GNU ftp
              server   〈〉.   The  macro  example  above  was
              specified by:

                     .FTP ftp://\ "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:

                     .B URL
                     .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
                     GNU Troff
                     .URL (Groff)a
                     .URL GNU
                     Hosted by
                     .URL FFII .

              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 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"" \

       .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 ajoining
              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 C \[la] \[ra]

              but these values will be superseded by a user call to LINKSTYLE.


       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).


       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.