%% toc

 \newcommand{\tocentry}[1]{\cleardoublepage\phantomsection\addcontentsline{toc}{chapter}{#1}

 \@mkboth{\MakeUppercase{#1}}{\MakeUppercase{#1}}}

 %% references

 \newcommand{\secref}[1]{\S\ref{#1}}

 \newcommand{\figref}[1]{figure~\ref{#1}}

 %% logical markup

 \newcommand{\strong}[1]{{\bfseries {#1}}}

 \newcommand{\qn}[1]{\emph{#1}}

 %% typographic conventions

 \newcommand{\qt}[1]{``{#1}''}

 %% verbatim text

 \newcommand{\isatypewriter}{\fontsize{9pt}{0pt}\tt\renewcommand{\baselinestretch}{1}\setlength{\baselineskip}{9pt}}

 %% quoted segments

 \makeatletter

 \isakeeptag{quote}

 \newenvironment{quotesegment}{\begin{quote}\isa@parindent\parindent\parindent0pt\isa@parskip\parskip\parskip0pt}{\end{quote}}

 \renewcommand{\isatagquote}{\begin{quotesegment}}

 \renewcommand{\endisatagquote}{\end{quotesegment}}

 \makeatother

 %% presentation

 \setcounter{secnumdepth}{2} \setcounter{tocdepth}{2}

 \pagestyle{headings}

 \binperiod

 \underscoreoff

 \renewcommand{\isadigit}[1]{\isamath{#1}}

 \isabellestyle{it}

 %%% Local Variables: 

 %%% mode: latex

 %%% TeX-master: "implementation"

 %%% End: