doc-src/Classes/style.sty

more efficient Markup_Tree, based on branches sorted by quasi-order;
renamed markup_node.scala to markup_tree.scala and classes/objects accordingly;
Position.Range: produce actual Text.Range;
Symbol.Index.decode: convert 1-based Isabelle offsets here;
added static Command.range;
simplified Command.markup;
Document_Model.token_marker: flatten markup at most once;
tuned;

%% toc
\newcommand{\tocentry}[1]{\cleardoublepage\phantomsection\addcontentsline{toc}{chapter}{#1}
\@mkboth{\MakeUppercase{#1}}{\MakeUppercase{#1}}}

%% paragraphs
\setlength{\parindent}{1em}

%% 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}}

%% quote environment
\isakeeptag{quote}
\renewenvironment{quote}
  {\list{}{\leftmargin2em\rightmargin0pt}\parindent0pt\parskip0pt\item\relax}
  {\endlist}
\renewcommand{\isatagquote}{\begin{quote}}
\renewcommand{\endisatagquote}{\end{quote}}
\newcommand{\quotebreak}{\\[1.2ex]}

%% presentation
\setcounter{secnumdepth}{2} \setcounter{tocdepth}{2}

%% character detail
\renewcommand{\isadigit}[1]{\isamath{#1}}
\binperiod
\underscoreoff

%% format
\pagestyle{headings}
\isabellestyle{it}


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