1 % extra.sty : Isabelle Manual extra macros for non-Springer version
3 \typeout{Document Style extra. Released 17 February 1994}
5 %%Euro-style date: 20 September 1955
6 \def\today{\number\day\space\ifcase\month\or
7 January\or February\or March\or April\or May\or June\or
8 July\or August\or September\or October\or November\or December\fi
12 %Indented, boxed alltt environment; uses \small\tt font
13 %\leftmargini is LaTeX's first-level indentation for items (2.5em)
14 %@endparenv is LaTeX's trick for preventing indentation of next paragraph
15 \newenvironment{ttbox}{\par\nobreak\vskip-2pt
16 \vbox\bgroup\footnotesize\begin{alltt} \leftskip\leftmargini}%
17 {\end{alltt}\egroup\vskip-7pt\@endparenv}
18 \newcommand\ttbreak{\end{ttbox}\vskip-10pt\begin{ttbox}}
20 %%%Put first chapter on odd page, with arabic numbering; like \cleardoublepage
21 \newcommand\clearfirst{\clearpage\ifodd\c@page\else
22 \hbox{}\newpage\if@twocolumn\hbox{}\newpage\fi\fi
23 \pagenumbering{arabic}}
25 %%%Ruled chapter headings
26 \def\@rulehead#1{\hrule height1pt \vskip 14pt \Huge \bf
27 #1 \vskip 14pt\hrule height1pt}
28 \def\@makechapterhead#1{ { \parindent 0pt
29 \ifnum\c@secnumdepth >\m@ne \raggedleft\large\bf\@chapapp{} \thechapter \par
30 \vskip 20pt \fi \raggedright \@rulehead{#1} \par \nobreak \vskip 40pt } }
32 \def\@makeschapterhead#1{ { \parindent 0pt \raggedright
33 \@rulehead{#1} \par \nobreak \vskip 40pt } }