% iman.sty : Isabelle Manual Page Layout

 %

 \typeout{Document Style iman. Released 17 February 1994}

 \hyphenation{Isa-belle man-u-script man-u-scripts ap-pen-dix mut-u-al-ly}

 \hyphenation{data-type data-types co-data-type co-data-types }

 \let\ts=\thinspace

 %usage: \iflabelundefined{LABEL}{if not defined}{if defined}

 \newcommand{\iflabelundefined}[1]{\@ifundefined{r@#1}}

 %%%INDEXING  use sedindex to process the index

 %index, putting page numbers of definitions in boldface

 \newcommand\bold[1]{{\bf#1}}

 \newcommand\fnote[1]{#1n}

 \newcommand\indexbold[1]{\index{#1|bold}}

 %for indexing constants, symbols, theorems, ...

 \newcommand\cdx[1]{{\tt#1}\index{#1@{\tt#1} constant}}

 \newcommand\sdx[1]{{\tt#1}\index{#1@{\tt#1} symbol}}

 \newcommand\tdx[1]{{\tt#1}\index{#1@{\tt#1} theorem}}

 \newcommand\tdxbold[1]{{\tt#1}\index{#1@{\tt#1} theorem|bold}}

 \newcommand\mltydx[1]{{\tt#1}\index{#1@{\tt#1} ML type}}

 \newcommand\xdx[1]{{\tt#1}\index{#1@{\tt#1} exception}}

 \newcommand\ndx[1]{{\tt#1}\index{#1@{\tt#1} nonterminal}}

 \newcommand\ndxbold[1]{{\tt#1}\index{#1@{\tt#1} nonterminal|bold}}

 \newcommand\cldx[1]{{\tt#1}\index{#1@{\tt#1} class}}

 \newcommand\tydx[1]{{\tt#1}\index{#1@{\tt#1} type}}

 \newcommand\thydx[1]{{\tt#1}\index{#1@{\tt#1} theory}}

 %for cross-references: 2nd argument (page number) is ignored

 \newcommand\see[2]{{\it see \/}{#1}}

 \newcommand\seealso[2]{{\it see also \/}{#1}}

 %set argument in \tt font; at the sime time, index using * prefix

 \newcommand\rmindex[1]{{#1}\index{#1}\@}

 \newcommand\ttindex[1]{{\tt#1}\index{*#1}\@}

 \newcommand\ttindexbold[1]{{\tt#1}\index{*#1|bold}\@}

 %set argument in \bf font and index in ROMAN font (for definitions in text!)

 \newcommand\bfindex[1]{{\bf#1}\index{#1|bold}\@}

 %%% underscores as ordinary characters, not for subscripting

 %%  use @ or \sb for subscripting; use \at for @

 %%  only works in \tt font

 %%  must not make _ an active char; would make \ttindex fail!

 \gdef\underscoreoff{\catcode`\@=8\catcode`\_=\other}

 \gdef\underscoreon{\catcode`\_=8\makeatother}

 \chardef\other=12

 \chardef\at=`\@

 % alternative underscore

 \def\_{\leavevmode\kern.06em\vbox{\hrule height.2ex width.3em}\hskip0.1em}

 %%% \dquotes permits usage of "..." for \hbox{...} -- also taken from under.sty

 {\catcode`\"=\active

 \gdef\dquotes{\catcode`\"=\active  \let"=\@mathText}%

 \gdef\@mathText#1"{\hbox{\mathTextFont #1\/}}}

 \def\mathTextFont{\frenchspacing\tt}

 %%%% meta-logical connectives

 \let\Forall=\bigwedge

 \let\Imp=\Longrightarrow

 \let\To=\Rightarrow

 \newcommand\Var[1]{{?\!#1}}

 %%%% ``WARNING'' environment

 \def\dbend{\vtop to 0pt{\vss\hbox{\Huge\bf!}\vss}}

 \newenvironment{warn}{\medskip\medbreak\begingroup \clubpenalty=10000 

          \small %%WAS\baselineskip=0.9\baselineskip

          \noindent \hangindent\parindent \hangafter=-2 

          \hbox to0pt{\hskip-\hangindent\dbend\hfill}\ignorespaces}%

         {\par\endgroup\medbreak}

 %%%% Standard logical symbols

 \let\turn=\vdash

 \let\conj=\wedge

 \let\disj=\vee

 \let\imp=\rightarrow

 \let\bimp=\leftrightarrow

 \newcommand\all[1]{\forall#1.}  %quantification

 \newcommand\ex[1]{\exists#1.}

 \newcommand{\pair}[1]{\langle#1\rangle}

 \newcommand\lbrakk{\mathopen{[\![}}

 \newcommand\rbrakk{\mathclose{]\!]}}

 \newcommand\List[1]{\lbrakk#1\rbrakk}  %was \obj

 \newcommand\vpile[1]{\begin{array}{c}#1\end{array}}

 \let\int=\cap

 \let\un=\cup

 \let\inter=\bigcap

 \let\union=\bigcup

 \def\ML{{\sc ml}}

 \def\OBJ{{\sc obj}}

 \def\AST{{\sc ast}}

 \def\LCF{{\tt LCF}\@}

 \def\FOL{{\tt FOL}\@}

 \def\HOL{{\tt HOL}\@}

 \def\LK{{\tt LK}\@}

 \def\ZF{{\tt ZF}\@}

 \def\CTT{{\tt CTT}\@}

 \def\Cube{{\tt Cube}}

 \def\Modal{{\tt Modal}}

 %macros to change the treatment of symbols

 \def\relsemicolon{\mathcode`\;="303B}   %treat ; like a relation

 \def\binperiod{\mathcode`\.="213A}   %treat . like a binary operator

 \def\binvert{\mathcode`\|="226A}     %treat | like a binary operator

 %redefinition of \sloppy and \fussy to use \emergencystretch

 \def\sloppy{\tolerance2000 \hfuzz.5pt \vfuzz.5pt \emergencystretch=15pt}

 \def\fussy{\tolerance200 \hfuzz.1pt \vfuzz.1pt \emergencystretch=0pt}

 %%%% \tt things

 \def\ttdescriptionlabel#1{\hspace\labelsep \tt #1}

 \def\ttdescription{\list{}{\labelwidth\z@ \itemindent-\leftmargin

        \let\makelabel\ttdescriptionlabel}}

 \let\endttdescription\endlist

 \chardef\ttilde=`\~     % A tilde for \tt font

 \chardef\ttback=`\\     % A backslash for \tt font

 \chardef\ttlbrace=`\{   % A left brace for \tt font

 \chardef\ttrbrace=`\}   % A right brace for \tt font

 \newfont{\sltt}{cmsltt10}     %% for output from terminal sessions

 \newcommand\out{\ \sltt}

 % "itmath.sty" use cmr italic for letters in math mode and get the

 %              usual letter spacing of text mode.

 %

 % Michael Lawley, April 1993

 % (lawley@cit.gu.edu.au)

 %

 % Derived from itma.sty (of unknown origin).

 %

 % MATHCODES

 %

 % The mathcodes for the letters A, ..., Z, a, ..., z are changed to

 % generate text italic rather than math italic by default. This makes

 % multi-letter identifiers look better. The mathcode for character c

 % is set to "7000 (variable class) + "400 (text italic) + c.

 %

 % For NFSS the mathcode is "7000 (variable class) + (hex)\itfam + c

 % \itfam is probably equal to 7.

 %

 \ifx\undefined\hexnumber@

   \def\hexnumber@#1{\ifcase#1 \z@

   \or \@ne \or \tw@ \or \thr@@

   \or 4\or 5\or 6\or 7\or 8\or

   9\or A\or B\or C\or D\or E\or F\fi}

 \fi

 \def\@setmcodes#1#2#3{{\count0=#1 \count1=#3

         \loop \global\mathcode\count0=\count1 \ifnum \count0<#2

         \advance\count0 by1 \advance\count1 by1 \repeat}}

 \edef\@tempa{\hexnumber@\itfam}

 \@setmcodes{`A}{`Z}{"7\@tempa 41}

 \@setmcodes{`a}{`z}{"7\@tempa 61}

 \ifx\define@mathgroup\undefined\else

         \define@mathgroup\mv@normal{\itfam}{cmr}{m}{it}\fi