doc-src/IsarImplementation/style.sty

eliminated fancy \ML logo for the sake of simpler source text (less dependence on LaTeX);
eliminated Isar toplevel invocation functions, which belong to TTY/ProofGeneral model;
moved remaining "ML toplevel" material to "Compile-time context";

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

%% references
\newcommand{\secref}[1]{\S\ref{#1}}
\newcommand{\chref}[1]{chapter~\ref{#1}}
\newcommand{\figref}[1]{figure~\ref{#1}}

%% math
\newcommand{\text}[1]{\mbox{#1}}
\newcommand{\isasymvartheta}{\isamath{\theta}}
\newcommand{\isactrlvec}[1]{\emph{$\vec{#1}$}}
\newcommand{\isactrlBG}{\isacharbackquoteopen}
\newcommand{\isactrlEN}{\isacharbackquoteclose}

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

\pagestyle{headings}
\sloppy
\binperiod

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

\newenvironment{mldecls}{\par\noindent\begingroup\footnotesize\def\isanewline{\\}\begin{tabular}{l}}{\end{tabular}\smallskip\endgroup}

\isafoldtag{FIXME}
\isakeeptag{mlref}
\renewcommand{\isatagmlref}{\subsection*{\makebox[0pt][r]{\fbox{ML}~~}Reference}\begingroup\def\isastyletext{\rm}\small}
\renewcommand{\endisatagmlref}{\endgroup}

\isakeeptag{mlex}
\renewcommand{\isatagmlex}{\subsection*{\makebox[0pt][r]{\fbox{ML}~~}Examples}}
\renewcommand{\endisatagmlex}{}

\renewcommand{\isatagML}{\begingroup\isabellestyle{default}\isastyle\def\isadigit##1{##1}}
\renewcommand{\endisatagML}{\endgroup}

\newcommand{\minorcmd}[1]{{\sf #1}}
\newcommand{\isasymtype}{\minorcmd{type}}
\newcommand{\isasymval}{\minorcmd{val}}

\newcommand{\isasymFIX}{\isakeyword{fix}}
\newcommand{\isasymASSUME}{\isakeyword{assume}}
\newcommand{\isasymDEFINE}{\isakeyword{define}}
\newcommand{\isasymNOTE}{\isakeyword{note}}
\newcommand{\isasymGUESS}{\isakeyword{guess}}
\newcommand{\isasymOBTAIN}{\isakeyword{obtain}}
\newcommand{\isasymTHEORY}{\isakeyword{theory}}
\newcommand{\isasymUSES}{\isakeyword{uses}}
\newcommand{\isasymEND}{\isakeyword{end}}
\newcommand{\isasymCONSTS}{\isakeyword{consts}}
\newcommand{\isasymDEFS}{\isakeyword{defs}}
\newcommand{\isasymTHEOREM}{\isakeyword{theorem}}
\newcommand{\isasymDEFINITION}{\isakeyword{definition}}

\isabellestyle{it}
\underscoreon
\renewcommand{\isacharunderscore}{\_}
\renewcommand{\isacharunderscorekeyword}{\_}
\newcommand{\isasymdash}{\mbox{-}}