buildframework/helium/external/python/lib/common/docutils-0.5-py2.5.egg/docutils/writers/latex2e/__init__.py
changeset 179 d8ac696cc51f
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/buildframework/helium/external/python/lib/common/docutils-0.5-py2.5.egg/docutils/writers/latex2e/__init__.py	Wed Dec 23 19:29:07 2009 +0200
@@ -0,0 +1,2177 @@
+# $Id: __init__.py 5333 2007-07-10 17:31:28Z grubert $
+# Author: Engelbert Gruber <grubert@users.sourceforge.net>
+# Copyright: This module has been placed in the public domain.
+
+"""
+LaTeX2e document tree Writer.
+"""
+
+__docformat__ = 'reStructuredText'
+
+# code contributions from several people included, thanks to all.
+# some named: David Abrahams, Julien Letessier, Lele Gaifax, and others.
+#
+# convention deactivate code by two # e.g. ##.
+
+import sys
+import time
+import re
+import string
+from types import ListType
+from docutils import frontend, nodes, languages, writers, utils
+from docutils.writers.newlatex2e import unicode_map
+
+from docutils.transforms.references import DanglingReferencesVisitor
+
+class Writer(writers.Writer):
+
+    supported = ('latex','latex2e')
+    """Formats this writer supports."""
+
+    settings_spec = (
+        'LaTeX-Specific Options',
+        'The LaTeX "--output-encoding" default is "latin-1:strict".',
+        (('Specify documentclass.  Default is "article".',
+          ['--documentclass'],
+          {'default': 'article', }),
+         ('Specify document options.  Multiple options can be given, '
+          'separated by commas.  Default is "10pt,a4paper".',
+          ['--documentoptions'],
+          {'default': '10pt,a4paper', }),
+         ('Use LaTeX footnotes. LaTeX supports only numbered footnotes (does it?). '
+          'Default: no, uses figures.',
+          ['--use-latex-footnotes'],
+          {'default': 0, 'action': 'store_true',
+           'validator': frontend.validate_boolean}),
+         ('Format for footnote references: one of "superscript" or '
+          '"brackets".  Default is "superscript".',
+          ['--footnote-references'],
+          {'choices': ['superscript', 'brackets'], 'default': 'superscript',
+           'metavar': '<format>',
+           'overrides': 'trim_footnote_reference_space'}),
+         ('Use LaTeX citations. '
+          'Default: no, uses figures which might get mixed with images.',
+          ['--use-latex-citations'],
+          {'default': 0, 'action': 'store_true',
+           'validator': frontend.validate_boolean}),
+         ('Format for block quote attributions: one of "dash" (em-dash '
+          'prefix), "parentheses"/"parens", or "none".  Default is "dash".',
+          ['--attribution'],
+          {'choices': ['dash', 'parentheses', 'parens', 'none'],
+           'default': 'dash', 'metavar': '<format>'}),
+         ('Specify a stylesheet file. The file will be "input" by latex in '
+          'the document header.  Default is no stylesheet ("").  '
+          'Overrides --stylesheet-path.',
+          ['--stylesheet'],
+          {'default': '', 'metavar': '<file>',
+           'overrides': 'stylesheet_path'}),
+         ('Specify a stylesheet file, relative to the current working '
+          'directory.  Overrides --stylesheet.',
+          ['--stylesheet-path'],
+          {'metavar': '<file>', 'overrides': 'stylesheet'}),
+         ('Table of contents by docutils (default) or LaTeX. LaTeX (writer) '
+          'supports only one ToC per document, but docutils does not know of '
+          'pagenumbers. LaTeX table of contents also means LaTeX generates '
+          'sectionnumbers.',
+          ['--use-latex-toc'],
+          {'default': 0, 'action': 'store_true',
+           'validator': frontend.validate_boolean}),
+         ('Add parts on top of the section hierarchy.',
+          ['--use-part-section'],
+          {'default': 0, 'action': 'store_true',
+           'validator': frontend.validate_boolean}),
+         ('Let LaTeX print author and date, do not show it in docutils '
+          'document info.',
+          ['--use-latex-docinfo'],
+          {'default': 0, 'action': 'store_true',
+           'validator': frontend.validate_boolean}),
+         ('Use LaTeX abstract environment for the documents abstract.'
+          'Per default the abstract is an unnumbered section.',
+          ['--use-latex-abstract'],
+          {'default': 0, 'action': 'store_true',
+           'validator': frontend.validate_boolean}),
+         ('Color of any hyperlinks embedded in text '
+          '(default: "blue", "0" to disable).',
+          ['--hyperlink-color'], {'default': 'blue'}),
+         ('Enable compound enumerators for nested enumerated lists '
+          '(e.g. "1.2.a.ii").  Default: disabled.',
+          ['--compound-enumerators'],
+          {'default': None, 'action': 'store_true',
+           'validator': frontend.validate_boolean}),
+         ('Disable compound enumerators for nested enumerated lists.  This is '
+          'the default.',
+          ['--no-compound-enumerators'],
+          {'action': 'store_false', 'dest': 'compound_enumerators'}),
+         ('Enable section ("." subsection ...) prefixes for compound '
+          'enumerators.  This has no effect without --compound-enumerators.  '
+          'Default: disabled.',
+          ['--section-prefix-for-enumerators'],
+          {'default': None, 'action': 'store_true',
+           'validator': frontend.validate_boolean}),
+         ('Disable section prefixes for compound enumerators.  '
+          'This is the default.',
+          ['--no-section-prefix-for-enumerators'],
+          {'action': 'store_false', 'dest': 'section_prefix_for_enumerators'}),
+         ('Set the separator between section number and enumerator '
+          'for compound enumerated lists.  Default is "-".',
+          ['--section-enumerator-separator'],
+          {'default': '-', 'metavar': '<char>'}),
+         ('When possibile, use verbatim for literal-blocks. '
+          'Default is to always use the mbox environment.',
+          ['--use-verbatim-when-possible'],
+          {'default': 0, 'action': 'store_true',
+           'validator': frontend.validate_boolean}),
+         ('Table style. "standard" with horizontal and vertical lines, '
+          '"booktabs" (LaTeX booktabs style) only horizontal lines '
+          'above and below the table and below the header or "nolines".  '
+          'Default: "standard"',
+          ['--table-style'],
+          {'choices': ['standard', 'booktabs','nolines'], 'default': 'standard',
+           'metavar': '<format>'}),
+         ('LaTeX graphicx package option. '
+          'Possible values are "dvips", "pdftex". "auto" includes LaTeX code '
+          'to use "pdftex" if processing with pdf(la)tex and dvips otherwise. '
+          'Default is no option.',
+          ['--graphicx-option'],
+          {'default': ''}),
+         ('LaTeX font encoding. '
+          'Possible values are "T1", "OT1", "" or some other fontenc option. '
+          'The font encoding influences available symbols, e.g. "<<" as one '
+          'character. Default is "" which leads to package "ae" (a T1 '
+          'emulation using CM fonts).',
+          ['--font-encoding'],
+          {'default': ''}),
+         ('Per default the latex-writer puts the reference title into '
+          'hyperreferences. Specify "ref*" or "pageref*" to get the section '
+          'number or the page number.',
+          ['--reference-label'],
+          {'default': None, }),
+         ('Specify style and database for bibtex, for example '
+          '"--use-bibtex=mystyle,mydb1,mydb2".',
+          ['--use-bibtex'],
+          {'default': None, }),
+          ),)
+
+    settings_defaults = {'output_encoding': 'latin-1'}
+
+    relative_path_settings = ('stylesheet_path',)
+
+    config_section = 'latex2e writer'
+    config_section_dependencies = ('writers',)
+
+    visitor_attributes = ("head_prefix", "head", 
+            "body_prefix", "body", "body_suffix")
+
+    output = None
+    """Final translated form of `document`."""
+
+    def __init__(self):
+        writers.Writer.__init__(self)
+        self.translator_class = LaTeXTranslator
+
+    def translate(self):
+        visitor = self.translator_class(self.document)
+        self.document.walkabout(visitor)
+        self.output = visitor.astext()
+        # copy parts 
+        for attr in self.visitor_attributes:
+            setattr(self, attr, getattr(visitor, attr))
+
+    def assemble_parts(self):
+        writers.Writer.assemble_parts(self)
+        for part in self.visitor_attributes:
+            self.parts[part] = ''.join(getattr(self, part))
+
+
+"""
+Notes on LaTeX
+--------------
+
+* LaTeX does not support multiple tocs in one document.
+  (might be no limitation except for docutils documentation)
+
+  The "minitoc" latex package can produce per-chapter tocs in
+  book and report document classes.
+
+* width
+
+  * linewidth - width of a line in the local environment
+  * textwidth - the width of text on the page
+
+  Maybe always use linewidth ?
+
+  *Bug* inside a minipage a (e.g. Sidebar) the linewidth is
+        not changed, needs fix in docutils so that tables
+        are not too wide.
+
+        So we add locallinewidth set it initially and
+        on entering sidebar and reset on exit.
+"""
+
+class Babel:
+    """Language specifics for LaTeX."""
+    # country code by a.schlock.
+    # partly manually converted from iso and babel stuff, dialects and some
+    _ISO639_TO_BABEL = {
+        'no': 'norsk',     #XXX added by hand ( forget about nynorsk?)
+        'gd': 'scottish',  #XXX added by hand
+        'hu': 'magyar',    #XXX added by hand
+        'pt': 'portuguese',#XXX added by hand
+        'sl': 'slovenian',
+        'af': 'afrikaans',
+        'bg': 'bulgarian',
+        'br': 'breton',
+        'ca': 'catalan',
+        'cs': 'czech',
+        'cy': 'welsh',
+        'da': 'danish',
+        'fr': 'french',
+        # french, francais, canadien, acadian
+        'de': 'ngerman',  #XXX rather than german
+        # ngerman, naustrian, german, germanb, austrian
+        'el': 'greek',
+        'en': 'english',
+        # english, USenglish, american, UKenglish, british, canadian
+        'eo': 'esperanto',
+        'es': 'spanish',
+        'et': 'estonian',
+        'eu': 'basque',
+        'fi': 'finnish',
+        'ga': 'irish',
+        'gl': 'galician',
+        'he': 'hebrew',
+        'hr': 'croatian',
+        'hu': 'hungarian',
+        'is': 'icelandic',
+        'it': 'italian',
+        'la': 'latin',
+        'nl': 'dutch',
+        'pl': 'polish',
+        'pt': 'portuguese',
+        'ro': 'romanian',
+        'ru': 'russian',
+        'sk': 'slovak',
+        'sr': 'serbian',
+        'sv': 'swedish',
+        'tr': 'turkish',
+        'uk': 'ukrainian'
+    }
+
+    def __init__(self,lang):
+        self.language = lang
+        # pdflatex does not produce double quotes for ngerman in tt.
+        self.double_quote_replacment = None
+        if re.search('^de',self.language):
+            #self.quotes = ("\"`", "\"'")
+            self.quotes = ('{\\glqq}', '{\\grqq}')
+            self.double_quote_replacment = "{\\dq}"
+        elif re.search('^it',self.language):
+            self.quotes = ("``", "''")
+            self.double_quote_replacment = r'{\char`\"}'
+        else:
+            self.quotes = ("``", "''")
+        self.quote_index = 0
+
+    def next_quote(self):
+        q = self.quotes[self.quote_index]
+        self.quote_index = (self.quote_index+1)%2
+        return q
+
+    def quote_quotes(self,text):
+        t = None
+        for part in text.split('"'):
+            if t == None:
+                t = part
+            else:
+                t += self.next_quote() + part
+        return t
+
+    def double_quotes_in_tt (self,text):
+        if not self.double_quote_replacment:
+            return text
+        return text.replace('"', self.double_quote_replacment)
+
+    def get_language(self):
+        if self._ISO639_TO_BABEL.has_key(self.language):
+            return self._ISO639_TO_BABEL[self.language]
+        else:
+            # support dialects.
+            l = self.language.split("_")[0]
+            if self._ISO639_TO_BABEL.has_key(l):
+                return self._ISO639_TO_BABEL[l]
+        return None
+
+
+latex_headings = {
+        'optionlist_environment' : [
+              '\\newcommand{\\optionlistlabel}[1]{\\bf #1 \\hfill}\n'
+              '\\newenvironment{optionlist}[1]\n'
+              '{\\begin{list}{}\n'
+              '  {\\setlength{\\labelwidth}{#1}\n'
+              '   \\setlength{\\rightmargin}{1cm}\n'
+              '   \\setlength{\\leftmargin}{\\rightmargin}\n'
+              '   \\addtolength{\\leftmargin}{\\labelwidth}\n'
+              '   \\addtolength{\\leftmargin}{\\labelsep}\n'
+              '   \\renewcommand{\\makelabel}{\\optionlistlabel}}\n'
+              '}{\\end{list}}\n',
+              ],
+        'lineblock_environment' : [
+            '\\newlength{\\lineblockindentation}\n'
+            '\\setlength{\\lineblockindentation}{2.5em}\n'
+            '\\newenvironment{lineblock}[1]\n'
+            '{\\begin{list}{}\n'
+            '  {\\setlength{\\partopsep}{\\parskip}\n'
+            '   \\addtolength{\\partopsep}{\\baselineskip}\n'
+            '   \\topsep0pt\\itemsep0.15\\baselineskip\\parsep0pt\n'
+            '   \\leftmargin#1}\n'
+            ' \\raggedright}\n'
+            '{\\end{list}}\n'
+            ],
+        'footnote_floats' : [
+            '% begin: floats for footnotes tweaking.\n',
+            '\\setlength{\\floatsep}{0.5em}\n',
+            '\\setlength{\\textfloatsep}{\\fill}\n',
+            '\\addtolength{\\textfloatsep}{3em}\n',
+            '\\renewcommand{\\textfraction}{0.5}\n',
+            '\\renewcommand{\\topfraction}{0.5}\n',
+            '\\renewcommand{\\bottomfraction}{0.5}\n',
+            '\\setcounter{totalnumber}{50}\n',
+            '\\setcounter{topnumber}{50}\n',
+            '\\setcounter{bottomnumber}{50}\n',
+            '% end floats for footnotes\n',
+            ],
+        'some_commands' : [
+            '% some commands, that could be overwritten in the style file.\n'
+            '\\newcommand{\\rubric}[1]'
+            '{\\subsection*{~\\hfill {\\it #1} \\hfill ~}}\n'
+            '\\newcommand{\\titlereference}[1]{\\textsl{#1}}\n'
+            '% end of "some commands"\n',
+            ]
+        }
+
+class DocumentClass:
+    """Details of a LaTeX document class."""
+
+    def __init__(self, document_class, with_part=False):
+        self.document_class = document_class
+        self._with_part = with_part
+
+    def section(self, level):
+        """ Return the section name at the given level for the specific
+            document class.
+
+            Level is 1,2,3..., as level 0 is the title."""
+
+        sections = [ 'section', 'subsection', 'subsubsection', 
+                     'paragraph', 'subparagraph' ]
+        if self.document_class in ('book', 'report', 'scrreprt', 'scrbook'):
+            sections.insert(0, 'chapter')
+        if self._with_part:
+            sections.insert(0, 'part')
+        if level <= len(sections):
+            return sections[level-1]
+        else:
+            return sections[-1]
+
+class Table:
+    """ Manage a table while traversing.
+        Maybe change to a mixin defining the visit/departs, but then
+        class Table internal variables are in the Translator.
+
+        Table style might be 
+        
+        * standard: horizontal and vertical lines
+        * booktabs (requires booktabs latex package): only horizontal lines
+        * nolines, borderless : no lines
+    """
+    def __init__(self,latex_type,table_style):
+        self._latex_type = latex_type
+        self._table_style = table_style
+        self._open = 0
+        # miscellaneous attributes
+        self._attrs = {}
+        self._col_width = []
+        self._rowspan = []
+        self.stubs = []
+
+    def open(self):
+        self._open = 1
+        self._col_specs = []
+        self.caption = None
+        self._attrs = {}
+        self._in_head = 0 # maybe context with search
+    def close(self):
+        self._open = 0
+        self._col_specs = None
+        self.caption = None
+        self._attrs = {}
+        self.stubs = []
+    def is_open(self):
+        return self._open
+
+    def set_table_style(self, table_style):
+        if not table_style in ('standard','booktabs','borderless','nolines'):
+            return
+        self._table_style = table_style
+
+    def used_packages(self):
+        if self._table_style == 'booktabs':
+            return '\\usepackage{booktabs}\n'
+        return ''
+    def get_latex_type(self):
+        return self._latex_type
+
+    def set(self,attr,value):
+        self._attrs[attr] = value
+    def get(self,attr):
+        if self._attrs.has_key(attr):
+            return self._attrs[attr]
+        return None
+    def get_vertical_bar(self):
+        if self._table_style == 'standard':
+            return '|'
+        return ''
+    # horizontal lines are drawn below a row, because we.
+    def get_opening(self):
+        if self._latex_type == 'longtable':
+            # otherwise longtable might move before paragraph and subparagraph
+            prefix = '\\leavevmode\n'
+        else:
+            prefix = ''
+        return '%s\\begin{%s}[c]' % (prefix, self._latex_type)
+    def get_closing(self):
+        line = ""
+        if self._table_style == 'booktabs':
+            line = '\\bottomrule\n'
+        elif self._table_style == 'standard':
+            lines = '\\hline\n'
+        return '%s\\end{%s}' % (line,self._latex_type)
+
+    def visit_colspec(self, node):
+        self._col_specs.append(node)
+        # "stubs" list is an attribute of the tgroup element:
+        self.stubs.append(node.attributes.get('stub'))
+
+    def get_colspecs(self):
+        """
+        Return column specification for longtable.
+
+        Assumes reST line length being 80 characters.
+        Table width is hairy.
+
+        === ===
+        ABC DEF
+        === ===
+
+        usually gets to narrow, therefore we add 1 (fiddlefactor).
+        """
+        width = 80
+
+        total_width = 0.0
+        # first see if we get too wide.
+        for node in self._col_specs:
+            colwidth = float(node['colwidth']+1) / width
+            total_width += colwidth
+        self._col_width = []
+        self._rowspan = []
+        # donot make it full linewidth
+        factor = 0.93
+        if total_width > 1.0:
+            factor /= total_width
+        bar = self.get_vertical_bar()
+        latex_table_spec = ""
+        for node in self._col_specs:
+            colwidth = factor * float(node['colwidth']+1) / width
+            self._col_width.append(colwidth+0.005)
+            self._rowspan.append(0)
+            latex_table_spec += "%sp{%.3f\\locallinewidth}" % (bar,colwidth+0.005)
+        return latex_table_spec+bar
+
+    def get_column_width(self):
+        """ return columnwidth for current cell (not multicell)
+        """
+        return "%.2f\\locallinewidth" % self._col_width[self._cell_in_row-1]
+
+    def visit_thead(self):
+        self._in_thead = 1
+        if self._table_style == 'standard':
+            return ['\\hline\n']
+        elif self._table_style == 'booktabs':
+            return ['\\toprule\n']
+        return []
+    def depart_thead(self):
+        a = []
+        #if self._table_style == 'standard':
+        #    a.append('\\hline\n')
+        if self._table_style == 'booktabs':
+            a.append('\\midrule\n')
+        if self._latex_type == 'longtable':
+            a.append('\\endhead\n')
+        # for longtable one could add firsthead, foot and lastfoot
+        self._in_thead = 0
+        return a
+    def visit_row(self):
+        self._cell_in_row = 0
+    def depart_row(self):
+        res = [' \\\\\n']
+        self._cell_in_row = None  # remove cell counter
+        for i in range(len(self._rowspan)):
+            if (self._rowspan[i]>0):
+                self._rowspan[i] -= 1
+
+        if self._table_style == 'standard':
+            rowspans = []
+            for i in range(len(self._rowspan)):
+                if (self._rowspan[i]<=0):
+                    rowspans.append(i+1)
+            if len(rowspans)==len(self._rowspan):
+                res.append('\\hline\n')
+            else:
+                cline = ''
+                rowspans.reverse()
+                # TODO merge clines
+                while 1:
+                    try:
+                        c_start = rowspans.pop()
+                    except:
+                        break
+                    cline += '\\cline{%d-%d}\n' % (c_start,c_start)
+                res.append(cline)
+        return res
+
+    def set_rowspan(self,cell,value):
+        try:
+            self._rowspan[cell] = value
+        except:
+            pass
+    def get_rowspan(self,cell):
+        try:
+            return self._rowspan[cell]
+        except:
+            return 0
+    def get_entry_number(self):
+        return self._cell_in_row
+    def visit_entry(self):
+        self._cell_in_row += 1
+    def is_stub_column(self):
+        if len(self.stubs) >= self._cell_in_row:
+            return self.stubs[self._cell_in_row-1]
+        return False
+
+
+class LaTeXTranslator(nodes.NodeVisitor):
+
+    # When options are given to the documentclass, latex will pass them
+    # to other packages, as done with babel.
+    # Dummy settings might be taken from document settings
+    
+    # Templates
+    # ---------
+    
+    latex_head = '\\documentclass[%s]{%s}\n'
+    linking = '\\usepackage[colorlinks=%s,linkcolor=%s,urlcolor=%s]{hyperref}\n'
+    stylesheet = '\\input{%s}\n'
+    # add a generated on day , machine by user using docutils version.
+    generator = '% generated by Docutils <http://docutils.sourceforge.net/>\n'
+    # Config setting defaults
+    # -----------------------
+
+    # use latex tableofcontents or let docutils do it.
+    use_latex_toc = 0
+
+    # TODO: use mixins for different implementations.
+    # list environment for docinfo. else tabularx
+    use_optionlist_for_docinfo = 0 # NOT YET IN USE
+
+    # Use compound enumerations (1.A.1.)
+    compound_enumerators = 0
+
+    # If using compound enumerations, include section information.
+    section_prefix_for_enumerators = 0
+
+    # This is the character that separates the section ("." subsection ...)
+    # prefix from the regular list enumerator.
+    section_enumerator_separator = '-'
+
+    # default link color
+    hyperlink_color = "blue"
+
+    def __init__(self, document):
+        nodes.NodeVisitor.__init__(self, document)
+        self.settings = settings = document.settings
+        self.latex_encoding = self.to_latex_encoding(settings.output_encoding)
+        self.use_latex_toc = settings.use_latex_toc
+        self.use_latex_docinfo = settings.use_latex_docinfo
+        self.use_latex_footnotes = settings.use_latex_footnotes
+        self._use_latex_citations = settings.use_latex_citations
+        self._reference_label = settings.reference_label
+        self.hyperlink_color = settings.hyperlink_color
+        self.compound_enumerators = settings.compound_enumerators
+        self.font_encoding = settings.font_encoding
+        self.section_prefix_for_enumerators = (
+            settings.section_prefix_for_enumerators)
+        self.section_enumerator_separator = (
+            settings.section_enumerator_separator.replace('_', '\\_'))
+        if self.hyperlink_color == '0':
+            self.hyperlink_color = 'black'
+            self.colorlinks = 'false'
+        else:
+            self.colorlinks = 'true'
+
+        if self.settings.use_bibtex:
+            self.bibtex = self.settings.use_bibtex.split(",",1)
+            # TODO avoid errors on not declared citations.
+        else:
+            self.bibtex = None
+        # language: labels, bibliographic_fields, and author_separators.
+        # to allow writing labes for specific languages.
+        self.language = languages.get_language(settings.language_code)
+        self.babel = Babel(settings.language_code)
+        self.author_separator = self.language.author_separators[0]
+        self.d_options = self.settings.documentoptions
+        if self.babel.get_language():
+            self.d_options += ',%s' % self.babel.get_language()
+
+        self.d_class = DocumentClass(settings.documentclass, 
+                                     settings.use_part_section)
+        # object for a table while proccessing.
+        self.table_stack = []
+        self.active_table = Table('longtable',settings.table_style)
+
+        # HACK.  Should have more sophisticated typearea handling.
+        if settings.documentclass.find('scr') == -1:
+            self.typearea = '\\usepackage[DIV12]{typearea}\n'
+        else:
+            if self.d_options.find('DIV') == -1 and self.d_options.find('BCOR') == -1:
+                self.typearea = '\\typearea{12}\n'
+            else:
+                self.typearea = ''
+
+        if self.font_encoding == 'OT1':
+            fontenc_header = ''
+        elif self.font_encoding == '':
+            fontenc_header = '\\usepackage{ae}\n\\usepackage{aeguill}\n'
+        else:
+            fontenc_header = '\\usepackage[%s]{fontenc}\n' % (self.font_encoding,)
+        if self.latex_encoding.startswith('utf8'):
+            input_encoding = '\\usepackage{ucs}\n\\usepackage[utf8x]{inputenc}\n'
+        else:
+            input_encoding = '\\usepackage[%s]{inputenc}\n' % self.latex_encoding
+        if self.settings.graphicx_option == '':
+            self.graphicx_package = '\\usepackage{graphicx}\n'
+        elif self.settings.graphicx_option.lower() == 'auto':
+            self.graphicx_package = '\n'.join(
+                ('%Check if we are compiling under latex or pdflatex',
+                 '\\ifx\\pdftexversion\\undefined',
+                 '  \\usepackage{graphicx}',
+                 '\\else',
+                 '  \\usepackage[pdftex]{graphicx}',
+                 '\\fi\n'))
+        else:
+            self.graphicx_package = (
+                '\\usepackage[%s]{graphicx}\n' % self.settings.graphicx_option)
+
+        self.head_prefix = [
+              self.latex_head % (self.d_options,self.settings.documentclass),
+              '\\usepackage{babel}\n',     # language is in documents settings.
+              fontenc_header,
+              '\\usepackage{shortvrb}\n',  # allows verb in footnotes.
+              input_encoding,
+              # * tabularx: for docinfo, automatic width of columns, always on one page.
+              '\\usepackage{tabularx}\n',
+              '\\usepackage{longtable}\n',
+              self.active_table.used_packages(),
+              # possible other packages.
+              # * fancyhdr
+              # * ltxtable is a combination of tabularx and longtable (pagebreaks).
+              #   but ??
+              #
+              # extra space between text in tables and the line above them
+              '\\setlength{\\extrarowheight}{2pt}\n',
+              '\\usepackage{amsmath}\n',   # what fore amsmath.
+              self.graphicx_package,
+              '\\usepackage{color}\n',
+              '\\usepackage{multirow}\n',
+              '\\usepackage{ifthen}\n',   # before hyperref!
+              self.linking % (self.colorlinks, self.hyperlink_color, self.hyperlink_color),
+              self.typearea,
+              self.generator,
+              # latex lengths
+              '\\newlength{\\admonitionwidth}\n',
+              '\\setlength{\\admonitionwidth}{0.9\\textwidth}\n'
+              # width for docinfo tablewidth
+              '\\newlength{\\docinfowidth}\n',
+              '\\setlength{\\docinfowidth}{0.9\\textwidth}\n'
+              # linewidth of current environment, so tables are not wider
+              # than the sidebar: using locallinewidth seems to defer evaluation
+              # of linewidth, this is fixing it.
+              '\\newlength{\\locallinewidth}\n',
+              # will be set later.
+              ]
+        self.head_prefix.extend( latex_headings['optionlist_environment'] )
+        self.head_prefix.extend( latex_headings['lineblock_environment'] )
+        self.head_prefix.extend( latex_headings['footnote_floats'] )
+        self.head_prefix.extend( latex_headings['some_commands'] )
+        ## stylesheet is last: so it might be possible to overwrite defaults.
+        stylesheet = utils.get_stylesheet_reference(settings)
+        if stylesheet:
+            settings.record_dependencies.add(stylesheet)
+            self.head_prefix.append(self.stylesheet % (stylesheet))
+
+        if self.linking: # and maybe check for pdf
+            self.pdfinfo = [ ]
+            self.pdfauthor = None
+            # pdftitle, pdfsubject, pdfauthor, pdfkeywords, 
+            # pdfcreator, pdfproducer
+        else:
+            self.pdfinfo = None
+        # NOTE: Latex wants a date and an author, rst puts this into
+        #   docinfo, so normally we do not want latex author/date handling.
+        # latex article has its own handling of date and author, deactivate.
+        # self.astext() adds \title{...} \author{...} \date{...}, even if the
+        # "..." are empty strings.
+        self.head = [ ]
+        # separate title, so we can appen subtitle.
+        self.title = ''
+        # if use_latex_docinfo: collects lists of author/organization/contact/address lines
+        self.author_stack = []
+        self.date = ''
+
+        self.body_prefix = ['\\raggedbottom\n']
+        self.body = []
+        self.body_suffix = ['\n']
+        self.section_level = 0
+        self.context = []
+        self.topic_classes = []
+        # column specification for tables
+        self.table_caption = None
+        
+        # Flags to encode
+        # ---------------
+        # verbatim: to tell encode not to encode.
+        self.verbatim = 0
+        # insert_newline: to tell encode to replace blanks by "~".
+        self.insert_none_breaking_blanks = 0
+        # insert_newline: to tell encode to add latex newline.
+        self.insert_newline = 0
+        # mbox_newline: to tell encode to add mbox and newline.
+        self.mbox_newline = 0
+        # inside citation reference labels underscores dont need to be escaped.
+        self.inside_citation_reference_label = 0
+
+        # Stack of section counters so that we don't have to use_latex_toc.
+        # This will grow and shrink as processing occurs.
+        # Initialized for potential first-level sections.
+        self._section_number = [0]
+
+        # The current stack of enumerations so that we can expand
+        # them into a compound enumeration.  
+        self._enumeration_counters = []
+
+        # The maximum number of enumeration counters we've used.
+        # If we go beyond this number, we need to create a new
+        # counter; otherwise, just reuse an old one.
+        self._max_enumeration_counters = 0
+
+        self._bibitems = []
+
+        # docinfo.
+        self.docinfo = None
+        # inside literal block: no quote mangling.
+        self.literal_block = 0
+        self.literal_block_stack = []
+        self.literal = 0
+        # true when encoding in math mode
+        self.mathmode = 0
+
+    def to_latex_encoding(self,docutils_encoding):
+        """
+        Translate docutils encoding name into latex's.
+
+        Default fallback method is remove "-" and "_" chars from docutils_encoding.
+
+        """
+        tr = {  "iso-8859-1": "latin1",     # west european
+                "iso-8859-2": "latin2",     # east european
+                "iso-8859-3": "latin3",     # esperanto, maltese
+                "iso-8859-4": "latin4",     # north european,scandinavian, baltic
+                "iso-8859-5": "iso88595",   # cyrillic (ISO)
+                "iso-8859-9": "latin5",     # turkish
+                "iso-8859-15": "latin9",    # latin9, update to latin1.
+                "mac_cyrillic": "maccyr",   # cyrillic (on Mac)
+                "windows-1251": "cp1251",   # cyrillic (on Windows)
+                "koi8-r": "koi8-r",         # cyrillic (Russian)
+                "koi8-u": "koi8-u",         # cyrillic (Ukrainian)
+                "windows-1250": "cp1250",   #
+                "windows-1252": "cp1252",   #
+                "us-ascii": "ascii",        # ASCII (US)
+                # unmatched encodings
+                #"": "applemac",
+                #"": "ansinew",  # windows 3.1 ansi
+                #"": "ascii",    # ASCII encoding for the range 32--127.
+                #"": "cp437",    # dos latine us
+                #"": "cp850",    # dos latin 1
+                #"": "cp852",    # dos latin 2
+                #"": "decmulti",
+                #"": "latin10",
+                #"iso-8859-6": ""   # arabic
+                #"iso-8859-7": ""   # greek
+                #"iso-8859-8": ""   # hebrew
+                #"iso-8859-10": ""   # latin6, more complete iso-8859-4
+             }
+        if tr.has_key(docutils_encoding.lower()):
+            return tr[docutils_encoding.lower()]
+        # convert: latin-1 and utf-8 and similar things
+        return docutils_encoding.replace("_", "").replace("-", "").lower()
+
+    def language_label(self, docutil_label):
+        return self.language.labels[docutil_label]
+
+    latex_equivalents = {
+        u'\u00A0' : '~',
+        u'\u2013' : '{--}',
+        u'\u2014' : '{---}',
+        u'\u2018' : '`',
+        u'\u2019' : '\'',
+        u'\u201A' : ',',
+        u'\u201C' : '``',
+        u'\u201D' : '\'\'',
+        u'\u201E' : ',,',
+        u'\u2020' : '{\\dag}',
+        u'\u2021' : '{\\ddag}',
+        u'\u2026' : '{\\dots}',
+        u'\u2122' : '{\\texttrademark}',
+        u'\u21d4' : '{$\\Leftrightarrow$}',
+        # greek alphabet ?
+    }
+
+    def unicode_to_latex(self,text):
+        # see LaTeX codec
+        # http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/252124
+        # Only some special chracters are translated, for documents with many
+        # utf-8 chars one should use the LaTeX unicode package.
+        for uchar in self.latex_equivalents.keys():
+            text = text.replace(uchar,self.latex_equivalents[uchar])
+        return text
+
+    def ensure_math(self, text):
+        if not self.__dict__.has_key('ensure_math_re'):
+            chars = {
+                # lnot,pm,twosuperior,threesuperior,mu,onesuperior,times,div
+                'latin1' : '\xac\xb1\xb2\xb3\xb5\xb9\xd7\xf7' ,
+                # also latin5 and latin9
+                }
+            self.ensure_math_re = re.compile('([%s])' % chars['latin1'])
+        text = self.ensure_math_re.sub(r'\\ensuremath{\1}', text)
+        return text
+
+    def encode(self, text):
+        """
+        Encode special characters (``# $ % & ~ _ ^ \ { }``) in `text` & return
+        """
+        # Escaping with a backslash does not help with backslashes, ~ and ^.
+
+        #     < > are only available in math-mode or tt font. (really ?)
+        #     $ starts math- mode.
+        # AND quotes
+        if self.verbatim:
+            return text
+        # compile the regexps once. do it here so one can see them.
+        #
+        # first the braces.
+        if not self.__dict__.has_key('encode_re_braces'):
+            self.encode_re_braces = re.compile(r'([{}])')
+        text = self.encode_re_braces.sub(r'{\\\1}',text)
+        if not self.__dict__.has_key('encode_re_bslash'):
+            # find backslash: except in the form '{\{}' or '{\}}'.
+            self.encode_re_bslash = re.compile(r'(?<!{)(\\)(?![{}]})')
+        # then the backslash: except in the form from line above:
+        # either '{\{}' or '{\}}'.
+        text = self.encode_re_bslash.sub(r'{\\textbackslash}', text)
+
+        # then dollar
+        text = text.replace("$", '{\\$}')
+        if not ( self.literal_block or self.literal or self.mathmode ):
+            # the vertical bar: in mathmode |,\vert or \mid
+            #   in textmode \textbar
+            text = text.replace("|", '{\\textbar}')
+            text = text.replace("<", '{\\textless}')
+            text = text.replace(">", '{\\textgreater}')
+        # then
+        text = text.replace("&", '{\\&}')
+        # the ^:
+        # * verb|^| does not work in mbox.
+        # * mathmode has wedge. hat{~} would also work.
+        # text = text.replace("^", '{\\ensuremath{^\\wedge}}')
+        text = text.replace("^", '{\\textasciicircum}')
+        text = text.replace("%", '{\\%}')
+        text = text.replace("#", '{\\#}')
+        text = text.replace("~", '{\\textasciitilde}')
+        # Separate compound characters, e.g. "--" to "-{}-".  (The
+        # actual separation is done later; see below.)
+        separate_chars = '-'
+        if self.literal_block or self.literal:
+            # In monospace-font, we also separate ",,", "``" and "''"
+            # and some other characters which can't occur in
+            # non-literal text.
+            separate_chars += ',`\'"<>'
+            # pdflatex does not produce doublequotes for ngerman.
+            text = self.babel.double_quotes_in_tt(text)
+            if self.font_encoding == 'OT1':
+                # We're using OT1 font-encoding and have to replace
+                # underscore by underlined blank, because this has
+                # correct width.
+                text = text.replace('_', '{\\underline{ }}')
+                # And the tt-backslash doesn't work in OT1, so we use
+                # a mirrored slash.
+                text = text.replace('\\textbackslash', '\\reflectbox{/}')
+            else:
+                text = text.replace('_', '{\\_}')
+        else:
+            text = self.babel.quote_quotes(text)
+            if not self.inside_citation_reference_label:
+                text = text.replace("_", '{\\_}')
+        for char in separate_chars * 2:
+            # Do it twice ("* 2") becaues otherwise we would replace
+            # "---" by "-{}--".
+            text = text.replace(char + char, char + '{}' + char)
+        if self.insert_newline or self.literal_block:
+            # Insert a blank before the newline, to avoid
+            # ! LaTeX Error: There's no line here to end.
+            text = text.replace("\n", '~\\\\\n')
+        elif self.mbox_newline:
+            if self.literal_block:
+                closings = "}" * len(self.literal_block_stack)
+                openings = "".join(self.literal_block_stack)
+            else:
+                closings = ""
+                openings = ""
+            text = text.replace("\n", "%s}\\\\\n\\mbox{%s" % (closings,openings))
+        text = text.replace('[', '{[}').replace(']', '{]}')
+        if self.insert_none_breaking_blanks:
+            text = text.replace(' ', '~')
+        if self.latex_encoding != 'utf8':
+            text = self.unicode_to_latex(text)
+            text = self.ensure_math(text)
+        return text
+
+    def attval(self, text,
+               whitespace=re.compile('[\n\r\t\v\f]')):
+        """Cleanse, encode, and return attribute value text."""
+        return self.encode(whitespace.sub(' ', text))
+
+    def astext(self):
+        if self.pdfinfo is not None and self.pdfauthor:
+            self.pdfinfo.append('pdfauthor={%s}' % self.pdfauthor)
+        if self.pdfinfo:
+            pdfinfo = '\\hypersetup{\n' + ',\n'.join(self.pdfinfo) + '\n}\n'
+        else:
+            pdfinfo = ''
+        head = '\\title{%s}\n\\author{%s}\n\\date{%s}\n' % \
+               (self.title,
+                ' \\and\n'.join(['~\\\\\n'.join(author_lines)
+                                 for author_lines in self.author_stack]),
+                self.date)
+        return ''.join(self.head_prefix + [head] + self.head + [pdfinfo]
+                        + self.body_prefix  + self.body + self.body_suffix)
+
+    def visit_Text(self, node):
+        self.body.append(self.encode(node.astext()))
+
+    def depart_Text(self, node):
+        pass
+
+    def visit_address(self, node):
+        self.visit_docinfo_item(node, 'address')
+
+    def depart_address(self, node):
+        self.depart_docinfo_item(node)
+
+    def visit_admonition(self, node, name=''):
+        self.body.append('\\begin{center}\\begin{sffamily}\n')
+        self.body.append('\\fbox{\\parbox{\\admonitionwidth}{\n')
+        if name:
+            self.body.append('\\textbf{\\large '+ self.language.labels[name] + '}\n');
+        self.body.append('\\vspace{2mm}\n')
+
+
+    def depart_admonition(self, node=None):
+        self.body.append('}}\n') # end parbox fbox
+        self.body.append('\\end{sffamily}\n\\end{center}\n');
+
+    def visit_attention(self, node):
+        self.visit_admonition(node, 'attention')
+
+    def depart_attention(self, node):
+        self.depart_admonition()
+
+    def visit_author(self, node):
+        self.visit_docinfo_item(node, 'author')
+
+    def depart_author(self, node):
+        self.depart_docinfo_item(node)
+
+    def visit_authors(self, node):
+        # not used: visit_author is called anyway for each author.
+        pass
+
+    def depart_authors(self, node):
+        pass
+
+    def visit_block_quote(self, node):
+        self.body.append( '\\begin{quote}\n')
+
+    def depart_block_quote(self, node):
+        self.body.append( '\\end{quote}\n')
+
+    def visit_bullet_list(self, node):
+        if 'contents' in self.topic_classes:
+            if self.use_latex_toc:
+                raise nodes.SkipNode
+            self.body.append( '\\begin{list}{}{}\n' )
+        else:
+            self.body.append( '\\begin{itemize}\n' )
+
+    def depart_bullet_list(self, node):
+        if 'contents' in self.topic_classes:
+            self.body.append( '\\end{list}\n' )
+        else:
+            self.body.append( '\\end{itemize}\n' )
+
+    # Imperfect superscript/subscript handling: mathmode italicizes
+    # all letters by default.
+    def visit_superscript(self, node):
+        self.body.append('$^{')
+        self.mathmode = 1
+
+    def depart_superscript(self, node):
+        self.body.append('}$')
+        self.mathmode = 0
+
+    def visit_subscript(self, node):
+        self.body.append('$_{')
+        self.mathmode = 1
+
+    def depart_subscript(self, node):
+        self.body.append('}$')
+        self.mathmode = 0
+
+    def visit_caption(self, node):
+        self.body.append( '\\caption{' )
+
+    def depart_caption(self, node):
+        self.body.append('}')
+
+    def visit_caution(self, node):
+        self.visit_admonition(node, 'caution')
+
+    def depart_caution(self, node):
+        self.depart_admonition()
+
+    def visit_title_reference(self, node):
+        self.body.append( '\\titlereference{' )
+
+    def depart_title_reference(self, node):
+        self.body.append( '}' )
+
+    def visit_citation(self, node):
+        # TODO maybe use cite bibitems
+        if self._use_latex_citations:
+            self.context.append(len(self.body))
+        else:
+            self.body.append('\\begin{figure}[b]')
+            for id in node['ids']:
+                self.body.append('\\hypertarget{%s}' % id)
+
+    def depart_citation(self, node):
+        if self._use_latex_citations:
+            size = self.context.pop()
+            label = self.body[size]
+            text = ''.join(self.body[size+1:])
+            del self.body[size:]
+            self._bibitems.append([label, text])
+        else:
+            self.body.append('\\end{figure}\n')
+
+    def visit_citation_reference(self, node):
+        if self._use_latex_citations:
+            self.body.append('\\cite{')
+            self.inside_citation_reference_label = 1
+        else:
+            href = ''
+            if node.has_key('refid'):
+                href = node['refid']
+            elif node.has_key('refname'):
+                href = self.document.nameids[node['refname']]
+            self.body.append('[\\hyperlink{%s}{' % href)
+
+    def depart_citation_reference(self, node):
+        if self._use_latex_citations:
+            self.body.append('}')
+            self.inside_citation_reference_label = 0
+        else:
+            self.body.append('}]')
+
+    def visit_classifier(self, node):
+        self.body.append( '(\\textbf{' )
+
+    def depart_classifier(self, node):
+        self.body.append( '})\n' )
+
+    def visit_colspec(self, node):
+        self.active_table.visit_colspec(node)
+
+    def depart_colspec(self, node):
+        pass
+
+    def visit_comment(self, node):
+        # Escape end of line by a new comment start in comment text.
+        self.body.append('%% %s \n' % node.astext().replace('\n', '\n% '))
+        raise nodes.SkipNode
+
+    def visit_compound(self, node):
+        pass
+
+    def depart_compound(self, node):
+        pass
+
+    def visit_contact(self, node):
+        self.visit_docinfo_item(node, 'contact')
+
+    def depart_contact(self, node):
+        self.depart_docinfo_item(node)
+
+    def visit_container(self, node):
+        pass
+
+    def depart_container(self, node):
+        pass
+
+    def visit_copyright(self, node):
+        self.visit_docinfo_item(node, 'copyright')
+
+    def depart_copyright(self, node):
+        self.depart_docinfo_item(node)
+
+    def visit_danger(self, node):
+        self.visit_admonition(node, 'danger')
+
+    def depart_danger(self, node):
+        self.depart_admonition()
+
+    def visit_date(self, node):
+        self.visit_docinfo_item(node, 'date')
+
+    def depart_date(self, node):
+        self.depart_docinfo_item(node)
+
+    def visit_decoration(self, node):
+        pass
+
+    def depart_decoration(self, node):
+        pass
+
+    def visit_definition(self, node):
+        pass
+
+    def depart_definition(self, node):
+        self.body.append('\n')
+
+    def visit_definition_list(self, node):
+        self.body.append( '\\begin{description}\n' )
+
+    def depart_definition_list(self, node):
+        self.body.append( '\\end{description}\n' )
+
+    def visit_definition_list_item(self, node):
+        pass
+
+    def depart_definition_list_item(self, node):
+        pass
+
+    def visit_description(self, node):
+        self.body.append( ' ' )
+
+    def depart_description(self, node):
+        pass
+
+    def visit_docinfo(self, node):
+        self.docinfo = []
+        self.docinfo.append('%' + '_'*75 + '\n')
+        self.docinfo.append('\\begin{center}\n')
+        self.docinfo.append('\\begin{tabularx}{\\docinfowidth}{lX}\n')
+
+    def depart_docinfo(self, node):
+        self.docinfo.append('\\end{tabularx}\n')
+        self.docinfo.append('\\end{center}\n')
+        self.body = self.docinfo + self.body
+        # clear docinfo, so field names are no longer appended.
+        self.docinfo = None
+
+    def visit_docinfo_item(self, node, name):
+        if name == 'author':
+            if not self.pdfinfo == None:
+                if not self.pdfauthor:
+                    self.pdfauthor = self.attval(node.astext())
+                else:
+                    self.pdfauthor += self.author_separator + self.attval(node.astext())
+        if self.use_latex_docinfo:
+            if name in ('author', 'organization', 'contact', 'address'):
+                # We attach these to the last author.  If any of them precedes
+                # the first author, put them in a separate "author" group (for
+                # no better semantics).
+                if name == 'author' or not self.author_stack:
+                    self.author_stack.append([])
+                if name == 'address':   # newlines are meaningful
+                    self.insert_newline = 1
+                    text = self.encode(node.astext())
+                    self.insert_newline = 0
+                else:
+                    text = self.attval(node.astext())
+                self.author_stack[-1].append(text)
+                raise nodes.SkipNode
+            elif name == 'date':
+                self.date = self.attval(node.astext())
+                raise nodes.SkipNode
+        self.docinfo.append('\\textbf{%s}: &\n\t' % self.language_label(name))
+        if name == 'address':
+            self.insert_newline = 1
+            self.docinfo.append('{\\raggedright\n')
+            self.context.append(' } \\\\\n')
+        else:
+            self.context.append(' \\\\\n')
+        self.context.append(self.docinfo)
+        self.context.append(len(self.body))
+
+    def depart_docinfo_item(self, node):
+        size = self.context.pop()
+        dest = self.context.pop()
+        tail = self.context.pop()
+        tail = self.body[size:] + [tail]
+        del self.body[size:]
+        dest.extend(tail)
+        # for address we did set insert_newline
+        self.insert_newline = 0
+
+    def visit_doctest_block(self, node):
+        self.body.append( '\\begin{verbatim}' )
+        self.verbatim = 1
+
+    def depart_doctest_block(self, node):
+        self.body.append( '\\end{verbatim}\n' )
+        self.verbatim = 0
+
+    def visit_document(self, node):
+        self.body_prefix.append('\\begin{document}\n')
+        # titled document?
+        if self.use_latex_docinfo or len(node) and isinstance(node[0], nodes.title):
+            self.body_prefix.append('\\maketitle\n')
+            # alternative use titlepage environment.
+            # \begin{titlepage}
+            # ...
+        self.body.append('\n\\setlength{\\locallinewidth}{\\linewidth}\n')
+
+    def depart_document(self, node):
+        # TODO insertion point of bibliography should none automatic.
+        if self._use_latex_citations and len(self._bibitems)>0:
+            if not self.bibtex:
+                widest_label = ""
+                for bi in self._bibitems:
+                    if len(widest_label)<len(bi[0]):
+                        widest_label = bi[0]
+                self.body.append('\n\\begin{thebibliography}{%s}\n'%widest_label)
+                for bi in self._bibitems:
+                    # cite_key: underscores must not be escaped
+                    cite_key = bi[0].replace(r"{\_}","_")
+                    self.body.append('\\bibitem[%s]{%s}{%s}\n' % (bi[0], cite_key, bi[1]))
+                self.body.append('\\end{thebibliography}\n')
+            else:
+                self.body.append('\n\\bibliographystyle{%s}\n' % self.bibtex[0])
+                self.body.append('\\bibliography{%s}\n' % self.bibtex[1])
+
+        self.body_suffix.append('\\end{document}\n')
+
+    def visit_emphasis(self, node):
+        self.body.append('\\emph{')
+        self.literal_block_stack.append('\\emph{')
+
+    def depart_emphasis(self, node):
+        self.body.append('}')
+        self.literal_block_stack.pop()
+
+    def visit_entry(self, node):
+        self.active_table.visit_entry()
+        # cell separation
+        if self.active_table.get_entry_number() == 1:
+            # if the firstrow is a multirow, this actually is the second row.
+            # this gets hairy if rowspans follow each other.
+            if self.active_table.get_rowspan(0):
+                count = 0
+                while self.active_table.get_rowspan(count):
+                    count += 1
+                    self.body.append(' & ')
+                self.active_table.visit_entry() # increment cell count
+        else:
+            self.body.append(' & ')
+
+        # multi{row,column}
+        # IN WORK BUG TODO HACK continues here
+        # multirow in LaTeX simply will enlarge the cell over several rows
+        # (the following n if n is positive, the former if negative).
+        if node.has_key('morerows') and node.has_key('morecols'):
+            raise NotImplementedError('Cells that '
+            'span multiple rows *and* columns are not supported, sorry.')
+        if node.has_key('morerows'):
+            count = node['morerows'] + 1
+            self.active_table.set_rowspan(self.active_table.get_entry_number()-1,count)
+            self.body.append('\\multirow{%d}{%s}{' % \
+                    (count,self.active_table.get_column_width()))
+            self.context.append('}')
+            # BUG following rows must have empty cells.
+        elif node.has_key('morecols'):
+            # the vertical bar before column is missing if it is the first column.
+            # the one after always.
+            if self.active_table.get_entry_number() == 1:
+                bar1 = self.active_table.get_vertical_bar()
+            else:
+                bar1 = ''
+            count = node['morecols'] + 1
+            self.body.append('\\multicolumn{%d}{%sl%s}{' % \
+                    (count, bar1, self.active_table.get_vertical_bar()))
+            self.context.append('}')
+        else:
+            self.context.append('')
+
+        # header / not header
+        if isinstance(node.parent.parent, nodes.thead):
+            self.body.append('\\textbf{')
+            self.context.append('}')
+        elif self.active_table.is_stub_column():
+            self.body.append('\\textbf{')
+            self.context.append('}')
+        else:
+            self.context.append('')
+
+    def depart_entry(self, node):
+        self.body.append(self.context.pop()) # header / not header
+        self.body.append(self.context.pop()) # multirow/column
+        # if following row is spanned from above.
+        if self.active_table.get_rowspan(self.active_table.get_entry_number()):
+           self.body.append(' & ')
+           self.active_table.visit_entry() # increment cell count
+
+    def visit_row(self, node):
+        self.active_table.visit_row()
+
+    def depart_row(self, node):
+        self.body.extend(self.active_table.depart_row())
+
+    def visit_enumerated_list(self, node):
+        # We create our own enumeration list environment.
+        # This allows to set the style and starting value
+        # and unlimited nesting.
+        enum_style = {'arabic':'arabic',
+                'loweralpha':'alph',
+                'upperalpha':'Alph',
+                'lowerroman':'roman',
+                'upperroman':'Roman' }
+        enum_suffix = ""
+        if node.has_key('suffix'):
+            enum_suffix = node['suffix']
+        enum_prefix = ""
+        if node.has_key('prefix'):
+            enum_prefix = node['prefix']
+        if self.compound_enumerators:
+            pref = ""
+            if self.section_prefix_for_enumerators and self.section_level:
+                for i in range(self.section_level):
+                    pref += '%d.' % self._section_number[i]
+                pref = pref[:-1] + self.section_enumerator_separator
+                enum_prefix += pref
+            for ctype, cname in self._enumeration_counters:
+                enum_prefix += '\\%s{%s}.' % (ctype, cname)
+        enum_type = "arabic"
+        if node.has_key('enumtype'):
+            enum_type = node['enumtype']
+        if enum_style.has_key(enum_type):
+            enum_type = enum_style[enum_type]
+
+        counter_name = "listcnt%d" % len(self._enumeration_counters)
+        self._enumeration_counters.append((enum_type, counter_name))
+        # If we haven't used this counter name before, then create a
+        # new counter; otherwise, reset & reuse the old counter.
+        if len(self._enumeration_counters) > self._max_enumeration_counters:
+            self._max_enumeration_counters = len(self._enumeration_counters)
+            self.body.append('\\newcounter{%s}\n' % counter_name)
+        else:
+            self.body.append('\\setcounter{%s}{0}\n' % counter_name)
+            
+        self.body.append('\\begin{list}{%s\\%s{%s}%s}\n' % \
+            (enum_prefix,enum_type,counter_name,enum_suffix))
+        self.body.append('{\n')
+        self.body.append('\\usecounter{%s}\n' % counter_name)
+        # set start after usecounter, because it initializes to zero.
+        if node.has_key('start'):
+            self.body.append('\\addtocounter{%s}{%d}\n' \
+                    % (counter_name,node['start']-1))
+        ## set rightmargin equal to leftmargin
+        self.body.append('\\setlength{\\rightmargin}{\\leftmargin}\n')
+        self.body.append('}\n')
+
+    def depart_enumerated_list(self, node):
+        self.body.append('\\end{list}\n')
+        self._enumeration_counters.pop()
+
+    def visit_error(self, node):
+        self.visit_admonition(node, 'error')
+
+    def depart_error(self, node):
+        self.depart_admonition()
+
+    def visit_field(self, node):
+        # real output is done in siblings: _argument, _body, _name
+        pass
+
+    def depart_field(self, node):
+        self.body.append('\n')
+        ##self.body.append('%[depart_field]\n')
+
+    def visit_field_argument(self, node):
+        self.body.append('%[visit_field_argument]\n')
+
+    def depart_field_argument(self, node):
+        self.body.append('%[depart_field_argument]\n')
+
+    def visit_field_body(self, node):
+        # BUG by attach as text we loose references.
+        if self.docinfo:
+            self.docinfo.append('%s \\\\\n' % self.encode(node.astext()))
+            raise nodes.SkipNode
+        # BUG: what happens if not docinfo
+
+    def depart_field_body(self, node):
+        self.body.append( '\n' )
+
+    def visit_field_list(self, node):
+        if not self.docinfo:
+            self.body.append('\\begin{quote}\n')
+            self.body.append('\\begin{description}\n')
+
+    def depart_field_list(self, node):
+        if not self.docinfo:
+            self.body.append('\\end{description}\n')
+            self.body.append('\\end{quote}\n')
+
+    def visit_field_name(self, node):
+        # BUG this duplicates docinfo_item
+        if self.docinfo:
+            self.docinfo.append('\\textbf{%s}: &\n\t' % self.encode(node.astext()))
+            raise nodes.SkipNode
+        else:
+            self.body.append('\\item [')
+
+    def depart_field_name(self, node):
+        if not self.docinfo:
+            self.body.append(':]')
+
+    def visit_figure(self, node):
+        if (not node.attributes.has_key('align') or
+            node.attributes['align'] == 'center'):
+            # centering does not add vertical space like center.
+            align = '\n\\centering'
+            align_end = ''
+        else:
+            # TODO non vertical space for other alignments.
+            align = '\\begin{flush%s}' % node.attributes['align']
+            align_end = '\\end{flush%s}' % node.attributes['align']
+        self.body.append( '\\begin{figure}[htbp]%s\n' % align )
+        self.context.append( '%s\\end{figure}\n' % align_end )
+
+    def depart_figure(self, node):
+        self.body.append( self.context.pop() )
+
+    def visit_footer(self, node):
+        self.context.append(len(self.body))
+
+    def depart_footer(self, node):
+        start = self.context.pop()
+        footer = (['\n\\begin{center}\small\n']
+                  + self.body[start:] + ['\n\\end{center}\n'])
+        self.body_suffix[:0] = footer
+        del self.body[start:]
+
+    def visit_footnote(self, node):
+        if self.use_latex_footnotes:
+            num,text = node.astext().split(None,1)
+            num = self.encode(num.strip())
+            self.body.append('\\footnotetext['+num+']')
+            self.body.append('{')
+        else:
+            self.body.append('\\begin{figure}[b]')
+            for id in node['ids']:
+                self.body.append('\\hypertarget{%s}' % id)
+
+    def depart_footnote(self, node):
+        if self.use_latex_footnotes:
+            self.body.append('}\n')
+        else:
+            self.body.append('\\end{figure}\n')
+
+    def visit_footnote_reference(self, node):
+        if self.use_latex_footnotes:
+            self.body.append("\\footnotemark["+self.encode(node.astext())+"]")
+            raise nodes.SkipNode
+        href = ''
+        if node.has_key('refid'):
+            href = node['refid']
+        elif node.has_key('refname'):
+            href = self.document.nameids[node['refname']]
+        format = self.settings.footnote_references
+        if format == 'brackets':
+            suffix = '['
+            self.context.append(']')
+        elif format == 'superscript':
+            suffix = '\\raisebox{.5em}[0em]{\\scriptsize'
+            self.context.append('}')
+        else:                           # shouldn't happen
+            raise AssertionError('Illegal footnote reference format.')
+        self.body.append('%s\\hyperlink{%s}{' % (suffix,href))
+
+    def depart_footnote_reference(self, node):
+        if self.use_latex_footnotes:
+            return
+        self.body.append('}%s' % self.context.pop())
+
+    # footnote/citation label
+    def label_delim(self, node, bracket, superscript):
+        if isinstance(node.parent, nodes.footnote):
+            if self.use_latex_footnotes:
+                raise nodes.SkipNode
+            if self.settings.footnote_references == 'brackets':
+                self.body.append(bracket)
+            else:
+                self.body.append(superscript)
+        else:
+            assert isinstance(node.parent, nodes.citation)
+            if not self._use_latex_citations:
+                self.body.append(bracket)
+
+    def visit_label(self, node):
+        self.label_delim(node, '[', '$^{')
+
+    def depart_label(self, node):
+        self.label_delim(node, ']', '}$')
+
+    # elements generated by the framework e.g. section numbers.
+    def visit_generated(self, node):
+        pass
+
+    def depart_generated(self, node):
+        pass
+
+    def visit_header(self, node):
+        self.context.append(len(self.body))
+
+    def depart_header(self, node):
+        start = self.context.pop()
+        self.body_prefix.append('\n\\verb|begin_header|\n')
+        self.body_prefix.extend(self.body[start:])
+        self.body_prefix.append('\n\\verb|end_header|\n')
+        del self.body[start:]
+
+    def visit_hint(self, node):
+        self.visit_admonition(node, 'hint')
+
+    def depart_hint(self, node):
+        self.depart_admonition()
+
+    def latex_image_length(self, width_str):
+        match = re.match('(\d*\.?\d*)\s*(\S*)', width_str)
+        if not match:
+            # fallback
+            return width_str
+        res = width_str
+        amount, unit = match.groups()[:2]
+        if unit == "px":
+            # LaTeX does not know pixels but points
+            res = "%spt" % amount
+        elif unit == "%":
+            res = "%.3f\\linewidth" % (float(amount)/100.0)
+        return res
+
+    def visit_image(self, node):
+        attrs = node.attributes
+        # Add image URI to dependency list, assuming that it's
+        # referring to a local file.
+        self.settings.record_dependencies.add(attrs['uri'])
+        pre = []                        # in reverse order
+        post = []
+        include_graphics_options = []
+        inline = isinstance(node.parent, nodes.TextElement)
+        if attrs.has_key('scale'):
+            # Could also be done with ``scale`` option to
+            # ``\includegraphics``; doing it this way for consistency.
+            pre.append('\\scalebox{%f}{' % (attrs['scale'] / 100.0,))
+            post.append('}')
+        if attrs.has_key('width'):
+            include_graphics_options.append('width=%s' % (
+                            self.latex_image_length(attrs['width']), ))
+        if attrs.has_key('height'):
+            include_graphics_options.append('height=%s' % (
+                            self.latex_image_length(attrs['height']), ))
+        if attrs.has_key('align'):
+            align_prepost = {
+                # By default latex aligns the top of an image.
+                (1, 'top'): ('', ''),
+                (1, 'middle'): ('\\raisebox{-0.5\\height}{', '}'),
+                (1, 'bottom'): ('\\raisebox{-\\height}{', '}'),
+                (0, 'center'): ('{\\hfill', '\\hfill}'),
+                # These 2 don't exactly do the right thing.  The image should
+                # be floated alongside the paragraph.  See
+                # http://www.w3.org/TR/html4/struct/objects.html#adef-align-IMG
+                (0, 'left'): ('{', '\\hfill}'),
+                (0, 'right'): ('{\\hfill', '}'),}
+            try:
+                pre.append(align_prepost[inline, attrs['align']][0])
+                post.append(align_prepost[inline, attrs['align']][1])
+            except KeyError:
+                pass                    # XXX complain here?
+        if not inline:
+            pre.append('\n')
+            post.append('\n')
+        pre.reverse()
+        self.body.extend( pre )
+        options = ''
+        if len(include_graphics_options)>0:
+            options = '[%s]' % (','.join(include_graphics_options))
+        self.body.append( '\\includegraphics%s{%s}' % (
+                            options, attrs['uri'] ) )
+        self.body.extend( post )
+
+    def depart_image(self, node):
+        pass
+
+    def visit_important(self, node):
+        self.visit_admonition(node, 'important')
+
+    def depart_important(self, node):
+        self.depart_admonition()
+
+    def visit_interpreted(self, node):
+        # @@@ Incomplete, pending a proper implementation on the
+        # Parser/Reader end.
+        self.visit_literal(node)
+
+    def depart_interpreted(self, node):
+        self.depart_literal(node)
+
+    def visit_legend(self, node):
+        self.body.append('{\\small ')
+
+    def depart_legend(self, node):
+        self.body.append('}')
+
+    def visit_line(self, node):
+        self.body.append('\item[] ')
+
+    def depart_line(self, node):
+        self.body.append('\n')
+
+    def visit_line_block(self, node):
+        if isinstance(node.parent, nodes.line_block):
+            self.body.append('\\item[] \n'
+                             '\\begin{lineblock}{\\lineblockindentation}\n')
+        else:
+            self.body.append('\n\\begin{lineblock}{0em}\n')
+
+    def depart_line_block(self, node):
+        self.body.append('\\end{lineblock}\n')
+
+    def visit_list_item(self, node):
+        # Append "{}" in case the next character is "[", which would break
+        # LaTeX's list environment (no numbering and the "[" is not printed).
+        self.body.append('\\item {} ')
+
+    def depart_list_item(self, node):
+        self.body.append('\n')
+
+    def visit_literal(self, node):
+        self.literal = 1
+        self.body.append('\\texttt{')
+
+    def depart_literal(self, node):
+        self.body.append('}')
+        self.literal = 0
+
+    def visit_literal_block(self, node):
+        """
+        Render a literal-block.
+
+        Literal blocks are used for "::"-prefixed literal-indented
+        blocks of text, where the inline markup is not recognized,
+        but are also the product of the parsed-literal directive,
+        where the markup is respected.
+        """
+        # In both cases, we want to use a typewriter/monospaced typeface.
+        # For "real" literal-blocks, we can use \verbatim, while for all
+        # the others we must use \mbox.
+        #
+        # We can distinguish between the two kinds by the number of
+        # siblings that compose this node: if it is composed by a
+        # single element, it's surely either a real one or a
+        # parsed-literal that does not contain any markup.
+        #
+        if not self.active_table.is_open():
+            # no quote inside tables, to avoid vertical space between
+            # table border and literal block.
+            # BUG: fails if normal text preceeds the literal block.
+            self.body.append('\\begin{quote}')
+            self.context.append('\\end{quote}\n')
+        else:
+            self.body.append('\n')
+            self.context.append('\n')
+        if (self.settings.use_verbatim_when_possible and (len(node) == 1)
+              # in case of a parsed-literal containing just a "**bold**" word:
+              and isinstance(node[0], nodes.Text)):
+            self.verbatim = 1
+            self.body.append('\\begin{verbatim}\n')
+        else:
+            self.literal_block = 1
+            self.insert_none_breaking_blanks = 1
+            self.body.append('{\\ttfamily \\raggedright \\noindent\n')
+            # * obey..: is from julien and never worked for me (grubert).
+            #   self.body.append('{\\obeylines\\obeyspaces\\ttfamily\n')
+
+    def depart_literal_block(self, node):
+        if self.verbatim:
+            self.body.append('\n\\end{verbatim}\n')
+            self.verbatim = 0
+        else:
+            self.body.append('\n}')
+            self.insert_none_breaking_blanks = 0
+            self.literal_block = 0
+            # obey end: self.body.append('}\n')
+        self.body.append(self.context.pop())
+
+    def visit_meta(self, node):
+        self.body.append('[visit_meta]\n')
+        # BUG maybe set keywords for pdf
+        ##self.head.append(self.starttag(node, 'meta', **node.attributes))
+
+    def depart_meta(self, node):
+        self.body.append('[depart_meta]\n')
+
+    def visit_note(self, node):
+        self.visit_admonition(node, 'note')
+
+    def depart_note(self, node):
+        self.depart_admonition()
+
+    def visit_option(self, node):
+        if self.context[-1]:
+            # this is not the first option
+            self.body.append(', ')
+
+    def depart_option(self, node):
+        # flag tha the first option is done.
+        self.context[-1] += 1
+
+    def visit_option_argument(self, node):
+        """The delimiter betweeen an option and its argument."""
+        self.body.append(node.get('delimiter', ' '))
+
+    def depart_option_argument(self, node):
+        pass
+
+    def visit_option_group(self, node):
+        self.body.append('\\item [')
+        # flag for first option
+        self.context.append(0)
+
+    def depart_option_group(self, node):
+        self.context.pop() # the flag
+        self.body.append('] ')
+
+    def visit_option_list(self, node):
+        self.body.append('\\begin{optionlist}{3cm}\n')
+
+    def depart_option_list(self, node):
+        self.body.append('\\end{optionlist}\n')
+
+    def visit_option_list_item(self, node):
+        pass
+
+    def depart_option_list_item(self, node):
+        pass
+
+    def visit_option_string(self, node):
+        ##self.body.append(self.starttag(node, 'span', '', CLASS='option'))
+        pass
+
+    def depart_option_string(self, node):
+        ##self.body.append('</span>')
+        pass
+
+    def visit_organization(self, node):
+        self.visit_docinfo_item(node, 'organization')
+
+    def depart_organization(self, node):
+        self.depart_docinfo_item(node)
+
+    def visit_paragraph(self, node):
+        index = node.parent.index(node)
+        if not ('contents' in self.topic_classes or
+                (isinstance(node.parent, nodes.compound) and
+                 index > 0 and
+                 not isinstance(node.parent[index - 1], nodes.paragraph) and
+                 not isinstance(node.parent[index - 1], nodes.compound))):
+            self.body.append('\n')
+
+    def depart_paragraph(self, node):
+        self.body.append('\n')
+
+    def visit_problematic(self, node):
+        self.body.append('{\\color{red}\\bfseries{}')
+
+    def depart_problematic(self, node):
+        self.body.append('}')
+
+    def visit_raw(self, node):
+        if 'latex' in node.get('format', '').split():
+            self.body.append(node.astext())
+        raise nodes.SkipNode
+
+    def visit_reference(self, node):
+        # BUG: hash_char "#" is trouble some in LaTeX.
+        # mbox and other environment do not like the '#'.
+        hash_char = '\\#'
+        if node.has_key('refuri'):
+            href = node['refuri'].replace('#',hash_char)
+        elif node.has_key('refid'):
+            href = hash_char + node['refid']
+        elif node.has_key('refname'):
+            href = hash_char + self.document.nameids[node['refname']]
+        else:
+            raise AssertionError('Unknown reference.')
+        self.body.append('\\href{%s}{' % href)
+        if self._reference_label and not node.has_key('refuri'):
+            self.body.append('\\%s{%s}}' % (self._reference_label,
+                        href.replace(hash_char, '')))
+            raise nodes.SkipNode
+
+    def depart_reference(self, node):
+        self.body.append('}')
+
+    def visit_revision(self, node):
+        self.visit_docinfo_item(node, 'revision')
+
+    def depart_revision(self, node):
+        self.depart_docinfo_item(node)
+
+    def visit_section(self, node):
+        self.section_level += 1
+        # Initialize counter for potential subsections:
+        self._section_number.append(0)
+        # Counter for this section's level (initialized by parent section):
+        self._section_number[self.section_level - 1] += 1
+
+    def depart_section(self, node):
+        # Remove counter for potential subsections:
+        self._section_number.pop()
+        self.section_level -= 1
+
+    def visit_sidebar(self, node):
+        # BUG:  this is just a hack to make sidebars render something
+        self.body.append('\n\\setlength{\\locallinewidth}{0.9\\admonitionwidth}\n')
+        self.body.append('\\begin{center}\\begin{sffamily}\n')
+        self.body.append('\\fbox{\\colorbox[gray]{0.80}{\\parbox{\\admonitionwidth}{\n')
+
+    def depart_sidebar(self, node):
+        self.body.append('}}}\n') # end parbox colorbox fbox
+        self.body.append('\\end{sffamily}\n\\end{center}\n');
+        self.body.append('\n\\setlength{\\locallinewidth}{\\linewidth}\n')
+
+
+    attribution_formats = {'dash': ('---', ''),
+                           'parentheses': ('(', ')'),
+                           'parens': ('(', ')'),
+                           'none': ('', '')}
+
+    def visit_attribution(self, node):
+        prefix, suffix = self.attribution_formats[self.settings.attribution]
+        self.body.append('\n\\begin{flushright}\n')
+        self.body.append(prefix)
+        self.context.append(suffix)
+
+    def depart_attribution(self, node):
+        self.body.append(self.context.pop() + '\n')
+        self.body.append('\\end{flushright}\n')
+
+    def visit_status(self, node):
+        self.visit_docinfo_item(node, 'status')
+
+    def depart_status(self, node):
+        self.depart_docinfo_item(node)
+
+    def visit_strong(self, node):
+        self.body.append('\\textbf{')
+        self.literal_block_stack.append('\\textbf{')
+
+    def depart_strong(self, node):
+        self.body.append('}')
+        self.literal_block_stack.pop()
+
+    def visit_substitution_definition(self, node):
+        raise nodes.SkipNode
+
+    def visit_substitution_reference(self, node):
+        self.unimplemented_visit(node)
+
+    def visit_subtitle(self, node):
+        if isinstance(node.parent, nodes.sidebar):
+            self.body.append('~\\\\\n\\textbf{')
+            self.context.append('}\n\\smallskip\n')
+        elif isinstance(node.parent, nodes.document):
+            self.title = self.title + \
+                '\\\\\n\\large{%s}\n' % self.encode(node.astext())
+            raise nodes.SkipNode
+        elif isinstance(node.parent, nodes.section):
+            self.body.append('\\textbf{')
+            self.context.append('}\\vspace{0.2cm}\n\n\\noindent ')
+
+    def depart_subtitle(self, node):
+        self.body.append(self.context.pop())
+
+    def visit_system_message(self, node):
+        pass
+
+    def depart_system_message(self, node):
+        self.body.append('\n')
+
+    def visit_table(self, node):
+        if self.active_table.is_open():
+            self.table_stack.append(self.active_table)
+            # nesting longtable does not work (e.g. 2007-04-18)
+            self.active_table = Table('tabular',self.settings.table_style)
+        self.active_table.open()
+        for cl in node['classes']:
+            self.active_table.set_table_style(cl)
+        self.body.append('\n' + self.active_table.get_opening())
+
+    def depart_table(self, node):
+        self.body.append(self.active_table.get_closing() + '\n')
+        self.active_table.close()
+        if len(self.table_stack)>0:
+            self.active_table = self.table_stack.pop()
+        else:
+            self.active_table.set_table_style(self.settings.table_style)
+
+    def visit_target(self, node):
+        # BUG: why not (refuri or refid or refname) means not footnote ?
+        if not (node.has_key('refuri') or node.has_key('refid')
+                or node.has_key('refname')):
+            for id in node['ids']:
+                self.body.append('\\hypertarget{%s}{' % id)
+            self.context.append('}' * len(node['ids']))
+        elif node.get("refid"):
+            self.body.append('\\hypertarget{%s}{' % node.get("refid"))
+            self.context.append('}')
+        else:
+            self.context.append('')
+
+    def depart_target(self, node):
+        self.body.append(self.context.pop())
+
+    def visit_tbody(self, node):
+        # BUG write preamble if not yet done (colspecs not [])
+        # for tables without heads.
+        if not self.active_table.get('preamble written'):
+            self.visit_thead(None)
+            # self.depart_thead(None)
+
+    def depart_tbody(self, node):
+        pass
+
+    def visit_term(self, node):
+        self.body.append('\\item[{')
+
+    def depart_term(self, node):
+        # definition list term.
+        # \leavevmode results in a line break if the term is followed by a item list.
+        self.body.append('}] \leavevmode ')
+
+    def visit_tgroup(self, node):
+        #self.body.append(self.starttag(node, 'colgroup'))
+        #self.context.append('</colgroup>\n')
+        pass
+
+    def depart_tgroup(self, node):
+        pass
+
+    def visit_thead(self, node):
+        self.body.append('{%s}\n' % self.active_table.get_colspecs())
+        if self.active_table.caption:
+            self.body.append('\\caption{%s}\\\\\n' % self.active_table.caption)
+        self.active_table.set('preamble written',1)
+        # TODO longtable supports firsthead and lastfoot too.
+        self.body.extend(self.active_table.visit_thead())
+
+    def depart_thead(self, node):
+        # the table header written should be on every page
+        # => \endhead
+        self.body.extend(self.active_table.depart_thead())
+        # and the firsthead => \endfirsthead
+        # BUG i want a "continued from previous page" on every not
+        # firsthead, but then we need the header twice.
+        #
+        # there is a \endfoot and \endlastfoot too.
+        # but we need the number of columns to
+        # self.body.append('\\multicolumn{%d}{c}{"..."}\n' % number_of_columns)
+        # self.body.append('\\hline\n\\endfoot\n')
+        # self.body.append('\\hline\n')
+        # self.body.append('\\endlastfoot\n')
+
+    def visit_tip(self, node):
+        self.visit_admonition(node, 'tip')
+
+    def depart_tip(self, node):
+        self.depart_admonition()
+
+    def bookmark(self, node):
+        """Append latex href and pdfbookmarks for titles.
+        """
+        if node.parent['ids']:
+            for id in node.parent['ids']:
+                self.body.append('\\hypertarget{%s}{}\n' % id)
+            if not self.use_latex_toc:
+                # BUG level depends on style. pdflatex allows level 0 to 3
+                # ToC would be the only on level 0 so i choose to decrement the rest.
+                # "Table of contents" bookmark to see the ToC. To avoid this
+                # we set all zeroes to one.
+                l = self.section_level
+                if l>0:
+                    l = l-1
+                # pdftex does not like "_" subscripts in titles
+                text = self.encode(node.astext())
+                for id in node.parent['ids']:
+                    self.body.append('\\pdfbookmark[%d]{%s}{%s}\n' % \
+                                     (l, text, id))
+
+    def visit_title(self, node):
+        """Section and other titles."""
+
+        if isinstance(node.parent, nodes.topic):
+            # the table of contents.
+            self.bookmark(node)
+            if ('contents' in self.topic_classes
+            and self.use_latex_toc):
+                self.body.append('\\renewcommand{\\contentsname}{')
+                self.context.append('}\n\\tableofcontents\n\n\\bigskip\n')
+            elif ('abstract' in self.topic_classes
+            and self.settings.use_latex_abstract):
+                raise nodes.SkipNode
+            else: # or section titles before the table of contents.
+                # BUG: latex chokes on center environment with 
+                # "perhaps a missing item", therefore we use hfill.
+                self.body.append('\\subsubsection*{~\\hfill ')
+                # the closing brace for subsection.
+                self.context.append('\\hfill ~}\n')
+        # TODO: for admonition titles before the first section
+        # either specify every possible node or ... ?
+        elif isinstance(node.parent, nodes.sidebar) \
+        or isinstance(node.parent, nodes.admonition):
+            self.body.append('\\textbf{\\large ')
+            self.context.append('}\n\\smallskip\n')
+        elif isinstance(node.parent, nodes.table):
+            # caption must be written after column spec
+            self.active_table.caption = self.encode(node.astext())
+            raise nodes.SkipNode
+        elif self.section_level == 0:
+            # document title
+            self.title = self.encode(node.astext())
+            if not self.pdfinfo == None:
+                self.pdfinfo.append( 'pdftitle={%s}' % self.encode(node.astext()) )
+            raise nodes.SkipNode
+        else:
+            self.body.append('\n\n')
+            self.body.append('%' + '_' * 75)
+            self.body.append('\n\n')
+            self.bookmark(node)
+
+            if self.use_latex_toc:
+                section_star = ""
+            else:
+                section_star = "*"
+
+            section_name = self.d_class.section(self.section_level)
+            self.body.append('\\%s%s{' % (section_name, section_star))
+            # MAYBE postfix paragraph and subparagraph with \leavemode to
+            # ensure floatables stay in the section and text starts on a new line.
+            self.context.append('}\n')
+
+    def depart_title(self, node):
+        self.body.append(self.context.pop())
+        for id in node.parent['ids']:
+            self.body.append('\\label{%s}\n' % id)
+
+    def visit_topic(self, node):
+        self.topic_classes = node['classes']
+        if ('abstract' in self.topic_classes
+            and self.settings.use_latex_abstract):
+            self.body.append('\\begin{abstract}\n')
+
+    def depart_topic(self, node):
+        if ('abstract' in self.topic_classes
+            and self.settings.use_latex_abstract):
+            self.body.append('\\end{abstract}\n')
+        self.topic_classes = []
+        if 'contents' in node['classes'] and self.use_latex_toc:
+            pass
+        else:
+            self.body.append('\n')
+
+    def visit_inline(self, node): # titlereference
+        classes = node.get('classes', ['Unknown', ])
+        for cls in classes:
+            self.body.append( '\\docutilsrole%s{' % cls)
+        self.context.append('}'*len(classes))
+
+    def depart_inline(self, node):
+        self.body.append(self.context.pop())
+
+    def visit_rubric(self, node):
+        self.body.append('\\rubric{')
+        self.context.append('}\n')
+
+    def depart_rubric(self, node):
+        self.body.append(self.context.pop())
+
+    def visit_transition(self, node):
+        self.body.append('\n\n')
+        self.body.append('%' + '_' * 75)
+        self.body.append('\n\\hspace*{\\fill}\\hrulefill\\hspace*{\\fill}')
+        self.body.append('\n\n')
+
+    def depart_transition(self, node):
+        pass
+
+    def visit_version(self, node):
+        self.visit_docinfo_item(node, 'version')
+
+    def depart_version(self, node):
+        self.depart_docinfo_item(node)
+
+    def visit_warning(self, node):
+        self.visit_admonition(node, 'warning')
+
+    def depart_warning(self, node):
+        self.depart_admonition()
+
+    def unimplemented_visit(self, node):
+        raise NotImplementedError('visiting unimplemented node type: %s'
+                                  % node.__class__.__name__)
+
+#    def unknown_visit(self, node):
+#    def default_visit(self, node):
+
+# vim: set ts=4 et ai :