closer correspondence of document and session names, while maintaining document names for external reference
%% toc
\newcommand{\tocentry}[1]{\cleardoublepage\phantomsection\addcontentsline{toc}{chapter}{#1}
\@mkboth{\MakeUppercase{#1}}{\MakeUppercase{#1}}}
\setcounter{secnumdepth}{2} \setcounter{tocdepth}{2}
%% references
\newcommand{\partref}[1]{part~\ref{#1}}
\newcommand{\secref}[1]{\S\ref{#1}}
\newcommand{\chref}[1]{chapter~\ref{#1}}
\newcommand{\Chref}[1]{Chapter~\ref{#1}}
\newcommand{\appref}[1]{appendix~\ref{#1}}
\newcommand{\Appref}[1]{Appendix~\ref{#1}}
\newcommand{\figref}[1]{figure~\ref{#1}}
\newcommand{\Figref}[1]{Figure~\ref{#1}}
%% Isar
\newcommand{\isasymBBAR}{{\,\newdimen{\tmpheight}\settoheight\tmpheight{\isacharbar}\rule{1pt}{\tmpheight}\,}}
\isafoldtag{noproof}\def\isafoldnoproof{~\isafold{proof}}
\newcommand{\isadigitreset}{\def\isadigit##1{##1}}
\renewcommand{\isacommand}[1]{\isakeyword{\isadigitreset#1}}
%% ML
\newenvironment{mldecls}{\par\noindent\begingroup\def\isanewline{\\}\begin{tabular}{ll}}{\end{tabular}\medskip\endgroup}
\renewcommand{\isatagML}{\begingroup\isabellestyle{default}\isastyle\isadigitreset}
\renewcommand{\endisatagML}{\endgroup}
%% math
\newcommand{\isasymstrut}{\isamath{\mathstrut}}
\newcommand{\isasymvartheta}{\isamath{\,\theta}}
\newcommand{\isactrlvec}[1]{\emph{$\overline{#1}$}}
\renewcommand{\isadigit}[1]{\isamath{#1}}
\newcommand{\text}[1]{\mbox{#1}}
%% global style options
\pagestyle{headings}
\sloppy
\parindent 0pt\parskip 0.5ex
\isabellestyle{literalunderscore}
\newcommand{\isasymdash}{\isatext{\mbox{-}}}
\railtermfont{\isabellestyle{tt}}
\railnontermfont{\isabellestyle{literalunderscore}}
\railnamefont{\isabellestyle{literalunderscore}}