\documentclass[10pt,twocolumn,lettersize]{book}

% For parsed docstrings
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{alltt}
\usepackage[bookmarks=true,bookmarksopen=true]{hyperref}
\usepackage{bookmark}
\usepackage{supertabular}

% Make lists more compact
\usepackage{enumitem}
\setlist{noitemsep}

\newlength{\zerosep}
[% if use_dnd_decorations %]
  \usepackage[layout=true]{dnd}
  \setlength{\zerosep}{0em}
[% else %]
  \usepackage[margin=1.5cm]{geometry}
  \usepackage[dvipsnames]{color}
  \setlength{\zerosep}{-1em}
[% endif %]
  \definecolor{mygrey}{gray}{0.7}

%% Unicode definitions for superscripts/subscripts
\DeclareUnicodeCharacter{00B9}{\textsuperscript{1}}
\DeclareUnicodeCharacter{00B2}{\textsuperscript{2}}
\DeclareUnicodeCharacter{00B3}{\textsuperscript{3}}
\DeclareUnicodeCharacter{2074}{\textsuperscript{4}}
\DeclareUnicodeCharacter{2075}{\textsuperscript{5}}
\DeclareUnicodeCharacter{2076}{\textsuperscript{6}}
\DeclareUnicodeCharacter{2077}{\textsuperscript{7}}
\DeclareUnicodeCharacter{2078}{\textsuperscript{8}}
\DeclareUnicodeCharacter{2079}{\textsuperscript{9}}
\DeclareUnicodeCharacter{2070}{\textsuperscript{0}}

%%% Fallback definitions for Docutils-specific commands
[% raw %]
\usepackage{longtable,ltcaption,array}
\setlength{\extrarowheight}{2pt}
\newlength{\DUtablewidth} % internal use in tables
% admonition (specially marked topic)
\providecommand{\DUadmonition}[2][class-arg]{%
  % try \DUadmonition#1{#2}:
  \ifcsname DUadmonition#1\endcsname%
    \csname DUadmonition#1\endcsname{#2}%
  \else
    \begin{center}
      \fbox{\parbox{0.9\linewidth}{#2}}
    \end{center}
  \fi
}
\newenvironment{DUlineblock}[1]{%
  \list{}{\setlength{\partopsep}{\parskip}
    \addtolength{\partopsep}{\baselineskip}
    \setlength{\topsep}{0pt}
    \setlength{\itemsep}{0.15\baselineskip}
    \setlength{\parsep}{0pt}
    \setlength{\leftmargin}{#1}}
  \raggedright
}

% titlereference standard role
\providecommand*{\DUroletitlereference}[1]{\textsl{#1}}

% title for topics, admonitions, unsupported section levels, and sidebar
\providecommand*{\DUtitle}[2][class-arg]{%
  % call \DUtitle#1{#2} if it exists:
  \ifcsname DUtitle#1\endcsname%
    \csname DUtitle#1\endcsname{#2}%
  \else
    \smallskip\noindent\textbf{#2}\smallskip%
  \fi
}
[% endraw %]

\begin{document}

\chapter*{[[ title ]]}