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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%         The REDUCE Style option File --- LaTeX version.              %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% The document should start with:
%   \documentstyle[11pt,reduce,makeidx]{...}
%
% This style adds the following commands:
%    \COMPATNOTE{...}           For compatibility notes.
%    \f{...}                    Sets function name is \tt.
%    \k{...}                    Sets BNF keyword bold.
%    \REDUCE                    REDUCE when needed as a word.
%    \RLISP                     RLISP when needed as a word.
%    \s{...}                    Sets BNF sentential form \em in <...>
%    \meta                      An alternative for BNF italics in <...>
%    \ttindex{...}              Puts index entry in \tt font.
%
%
%
% Basic religion about REDUCE documentation. No paragraph indentation,
% bigger skip between lines, ragged bottom, and not as much vertical
% space.
%% RmS: setup of size dependent parameters. 11pt is assumed, so let's force it.

\typeout{Document style option `reduce' -- released 5 Nov 1991.}

%  ****************************************
%  *               FONTS                  *
%  ****************************************
%

\lineskip 1pt            % \lineskip is 1pt for all font sizes.
\normallineskip 1pt
\def\baselinestretch{1}

% Each size-changing command \SIZE executes the command
%        \@setsize\SIZE{BASELINESKIP}\FONTSIZE\@FONTSIZE
% where:
%   BASELINESKIP = Normal value of \baselineskip for that size. (Actual
%                  value will be \baselinestretch * BASELINESKIP.)
%
%  \FONTSIZE     = Name of font-size command.  The currently available
%                  (preloaded) font sizes are: \vpt (5pt), \vipt (6pt),
%                  \viipt (etc.), \viiipt, \ixpt, \xpt, \xipt, \xiipt,
%                  \xivpt, \xviipt, \xxpt, \xxvpt.
%  \@FONTSIZE    = The same as the font-size command except with an
%                  '@' in front---e.g., if \FONTSIZE = \xivpt then
%                  \@FONTSIZE = \@xivpt.
%
% For reasons of efficiency that needn't concern the designer,
% the document style defines \@normalsize instead of \normalsize.  This
% is done only for \normalsize, not for any other size-changing
% commands.

\def\@normalsize{\@setsize\normalsize{13.6pt}\xipt\@xipt
\abovedisplayskip .5\baselineskip
\belowdisplayskip \abovedisplayskip
\abovedisplayshortskip  \z@ plus3\p@
\belowdisplayshortskip  6.5\p@ plus3.5\p@ minus3\p@
\let\@listi\@listI}   % Setting of \@listi added 9 Jun 87

\def\small{\@setsize\small{12pt}\xpt\@xpt
\abovedisplayskip .5\baselineskip
\belowdisplayskip \abovedisplayskip
\abovedisplayshortskip  \z@ plus3\p@
\belowdisplayshortskip  6\p@ plus3\p@ minus3\p@
\def\@listi{\leftmargin\leftmargini %% Added 22 Dec 87
\topsep \z@\parsep 3\p@ plus2\p@ minus\p@
\itemsep .5\baselineskip}}

\def\footnotesize{\@setsize\footnotesize{11pt}\ixpt\@ixpt
\abovedisplayskip .5\baselineskip
\belowdisplayskip \abovedisplayskip
\abovedisplayshortskip \z@ plus\p@
\belowdisplayshortskip 4\p@ plus2\p@ minus2\p@
\def\@listi{\leftmargin\leftmargini %% Added 22 Dec 87
\topsep \z@ \parsep 2\p@ plus\p@ minus\p@
\itemsep .5\baselineskip}}

\def\scriptsize{\@setsize\scriptsize{9.5pt}\viiipt\@viiipt}
\def\tiny{\@setsize\tiny{7pt}\vipt\@vipt}
\def\large{\@setsize\large{14pt}\xiipt\@xiipt}
\def\Large{\@setsize\Large{18pt}\xivpt\@xivpt}
\def\LARGE{\@setsize\LARGE{22pt}\xviipt\@xviipt}
\def\huge{\@setsize\huge{25pt}\xxpt\@xxpt}
\def\Huge{\@setsize\Huge{30pt}\xxvpt\@xxvpt}

\normalsize  % Choose the normalsize font.


%  ****************************************
%  *            PAGE LAYOUT               *
%  ****************************************
%
% All margin dimensions measured from a point one inch from top and side
% of page.

% SIDE MARGINS:
\if@twoside               % Values for two-sided printing:
   \oddsidemargin 36pt    %   Left margin on odd-numbered pages.
   \evensidemargin 74pt   %   Left margin on even-numbered pages.
   \marginparwidth 100pt  %   Width of marginal notes.
\else                     % Values for one-sided printing:
   \oddsidemargin 54pt    %   Note that \oddsidemargin = \evensidemargin
   \evensidemargin 54pt
   \marginparwidth 83pt
\fi
\marginparsep 10pt        % Horizontal space between outer margin and
                          % marginal note


% VERTICAL SPACING:
                         % Top of page:
\topmargin 27pt          %    Nominal distance from top of page to top
                         %    of box containing running head.
\headheight 12pt         %    Height of box containing running head.
\headsep 25pt            %    Space between running head and text.
% \topskip = 10pt        %    '\baselineskip' for first line of page.
                         % Bottom of page:
\footskip 30pt           %    Distance from baseline of box containing
                         %    foot to baseline of last line of text.

% DIMENSION OF TEXT:
% 24 Jun 86: changed to explicitly compute \textheight to avoid
% roundoff.  The value of the multiplier was calculated as the floor of
% the old \textheight minus \topskip, divided by \baselineskip for
% \normalsize.  The old value of \textheight was 530.4pt.
% \textheight is the height of text (including footnotes and figures,
% excluding running head and foot).

\textheight = 38\baselineskip
\advance\textheight by \topskip
\textwidth 360pt         % Width of text line.
                         % For two-column mode:
\columnsep 10pt          %    Space between columns
\columnseprule 0pt       %    Width of rule between columns.

% A \raggedbottom command causes 'ragged bottom' pages: pages set to
% natural height instead of being stretched to exactly \textheight.

% FOOTNOTES:

\footnotesep 7.7pt    % Height of strut placed at the beginning of every
                      % footnote = height of normal \footnotesize strut,
                      % so no extra space between footnotes.

\skip\footins 10pt plus 4pt minus 2pt  % Space between last line of text
                                       % and  top of first footnote.

% FLOATS: (a float is something like a figure or table)
%
%  FOR FLOATS ON A TEXT PAGE:
%
%    ONE-COLUMN MODE OR SINGLE-COLUMN FLOATS IN TWO-COLUMN MODE:
\floatsep 12pt plus 2pt minus 2pt        % Space between adjacent floats
                                         % moved to top or bottom of
                                         % text page.
\textfloatsep 20pt plus 2pt minus 4pt    % Space between main text and
                                         % floats at top or bottom of
                                         % page.
\intextsep 12pt plus 2pt minus 2pt       % Space between in-text figures
                                         % and text.
\@maxsep 20pt                            % The maximum of \floatsep,
                                         % \textfloatsep and \intextsep
                                         % (minus the stretch and
                                         % shrink).
%    TWO-COLUMN FLOATS IN TWO-COLUMN MODE:
\dblfloatsep 12pt plus 2pt minus 2pt     % Same as \floatsep for
                                         % double-column figures in
                                         % two-column mode.
\dbltextfloatsep 20pt plus 2pt minus 4pt % \textfloatsep for
                                         % double-column floats.
\@dblmaxsep 20pt                         % The maximum of \dblfloatsep
                                         % and \dbltexfloatsep.

%  FOR FLOATS ON A SEPARATE FLOAT PAGE OR COLUMN:
%    ONE-COLUMN MODE OR SINGLE-COLUMN FLOATS IN TWO-COLUMN MODE:
\@fptop 0pt plus 1fil    % Stretch at top of float page/column. (Must
                         % be 0pt plus ...)
\@fpsep 8pt plus 2fil    % Space between floats on float page/column.
\@fpbot 0pt plus 1fil    % Stretch at bottom of float page/column. (Must
                         % be 0pt plus ... )

%   DOUBLE-COLUMN FLOATS IN TWO-COLUMN MODE.
\@dblfptop 0pt plus 1fil % Stretch at top of float page. (Must be 0pt
                         % plus ...)
\@dblfpsep 8pt plus 2fil % Space between floats on float page.
\@dblfpbot 0pt plus 1fil % Stretch at bottom of float page. (Must be
                         % 0pt plus ... )
% MARGINAL NOTES:
%
\marginparpush 5pt       % Minimum vertical separation between two
                         % marginal notes.


%  ****************************************
%  *           PARAGRAPHING               *
%  ****************************************
%
\parskip 6pt plus 1pt     %% RmS   % Extra vertical space between
                                   % paragraphs.
\parindent 0pt            %% RmS   % Width of paragraph indentation.
\topsep 0pt               %% RmS   % Extra vertical space, in addition
                                   % to \parskip, added above and below
                                   % list and paragraphing environments.
\partopsep 0pt            %% RmS   % Extra vertical space, in addition
                                   % to \parskip and \topsep, added when
                                   % user leaves blank line before
                                   % environment.
\itemsep \topsep          %% RmS   % Extra vertical space, in addition
                                   % to \parskip, added between list
                                   % items.
% See \@listI for values of \topsep and \itemsep

% The following page-breaking penalties are defined

\@lowpenalty   51      % Produced by \nopagebreak[1] or \nolinebreak[1]
\@medpenalty  151      % Produced by \nopagebreak[2] or \nolinebreak[2]
\@highpenalty 301      % Produced by \nopagebreak[3] or \nolinebreak[3]

\@beginparpenalty -\@lowpenalty    % Before a list or paragraph
                                   % environment.
\@endparpenalty   -\@lowpenalty    % After a list or paragraph
                                   % environment.
\@itempenalty     -\@lowpenalty    % Between list items.

% \clubpenalty         % 'Club line'  at bottom of page.
% \widowpenalty        % 'Widow line' at top of page.
% \displaywidowpenalty % Math display widow line.
% \predisplaypenalty   % Breaking before a math display.
% \postdisplaypenalty  % Breaking after a math display.
% \interlinepenalty    % Breaking at a line within a paragraph.
% \brokenpenalty       % Breaking after a hyphenated line.


%    ****************************************
%    *             SECTIONS                 *
%    ****************************************
%

% \@startsection {NAME}{LEVEL}{INDENT}{BEFORESKIP}{AFTERSKIP}{STYLE}
%            optional * [ALTHEADING]{HEADING}
%    Generic command to start a section.
%    NAME       : e.g., 'subsection'
%    LEVEL      : a number, denoting depth of section -- i.e.,
%                 section=1, subsection = 2, etc.  A section number will
%                 be printed if and only if LEVEL < or = the value of
%                 the secnumdepth counter.
%    INDENT     : Indentation of heading from left margin
%    BEFORESKIP : Absolute value = skip to leave above the heading.
%                 If negative, then paragraph indent of text following
%                 heading is suppressed.
%    AFTERSKIP  : if positive, then skip to leave below heading,
%                       else - skip to leave to right of run-in heading.
%    STYLE      : commands to set style
%  If '*' missing, then increments the counter.  If it is present, then
%  there should be no [ALTHEADING] argument.  A sectioning command
%  is normally defined to \@startsection + its first six arguments.

\def\section{\@startsection {section}{1}{\z@}{-3.5ex plus-1ex minus
    -.2ex}{2.3ex plus.2ex}{\reset@font\Large\bf}}
\def\subsection{\@startsection{subsection}{2}{\z@}{-3.25ex plus-1ex
     minus-.2ex}{1.5ex plus.2ex}{\reset@font\large\bf}}
\def\subsubsection{\@startsection{subsubsection}{3}{\z@}{-3.25ex plus
     -1ex minus-.2ex}{1.5ex plus.2ex}{\reset@font\normalsize\bf}}
\def\paragraph{\@startsection
     {paragraph}{4}{\z@}{3.25ex plus1ex minus.2ex}{-1em}{\reset@font
     \normalsize\bf}}
\def\subparagraph{\@startsection
     {subparagraph}{4}{\parindent}{3.25ex plus1ex minus
     .2ex}{-1em}{\reset@font\normalsize\bf}}


% Default initializations of \...mark commands.  (See below for their
% use in defining page styles.
%

% \def\sectionmark#1{}           % Preloaded definitions
% \def\subsectionmark#1{}
% \def\subsubsectionmark#1{}
% \def\paragraphmark#1{}
% \def\subparagraphmark#1{}

% The value of the counter secnumdepth gives the depth of the
% highest-level sectioning command that is to produce section numbers.
%

\setcounter{secnumdepth}{3}

% APPENDIX
%
% The \appendix command must do the following:
%    -- reset the section and subsection counters to zero
%    -- redefine the section counter to produce appendix numbers
%    -- redefine the \section command if appendix titles and headings
%       are to look different from section titles and headings.

\def\appendix{\par
  \setcounter{section}{0}
  \setcounter{subsection}{0}
  \def\thesection{\Alph{section}}}


%    ****************************************
%    *                LISTS                 *
%    ****************************************
%

% The following commands are used to set the default values for the list
% environment's parameters. See the LaTeX manual for an explanation of
% the meanings of the parameters.  Defaults for the list environment are
% set as follows.  First, \rightmargin, \listparindent and \itemindent
% are set to 0pt.  Then, for a Kth level list, the command \@listK is
% called, where 'K' denotes 'i', 'ii', ... , 'vi'.  (I.e., \@listiii is
% called for a third-level list.)  By convention, \@listK should set
% \leftmargin to \leftmarginK.
%

\leftmargini 2.5em
\leftmarginii 2.2em     % > \labelsep + width of '(m)'
\leftmarginiii 1.87em   % > \labelsep + width of 'vii.'
\leftmarginiv 1.7em     % > \labelsep + width of 'M.'
\leftmarginv 1em
\leftmarginvi 1em

\leftmargin\leftmargini
\labelsep .5em
\labelwidth\leftmargini\advance\labelwidth-\labelsep
%\parsep 4.5pt plus 2pt minus 1pt  %(Removed 9 Jun 87)

% \@listI defines top level and \@listi values of
% \leftmargin, \topsep, \parsep, and \itemsep
% (Added 9 Jun 87)
\def\@listI{\leftmargin\leftmargini \parsep 4.5\p@ plus2\p@ minus\p@
\topsep \z@ \itemsep \topsep}

\let\@listi\@listI
\@listi

\def\@listii{\leftmargin\leftmarginii
   \labelwidth\leftmarginii\advance\labelwidth-\labelsep
   \topsep \z@ \itemsep \topsep
   \parsep 2\p@ plus\p@ minus\p@}

\def\@listiii{\leftmargin\leftmarginiii
    \labelwidth\leftmarginiii\advance\labelwidth-\labelsep
    \topsep \z@ \itemsep \topsep
    \parsep \z@ \partopsep\z@}

\def\@listiv{\leftmargin\leftmarginiv
     \labelwidth\leftmarginiv\advance\labelwidth-\labelsep}





%% RmS: which at the same time makes the vertical space in lists (verbatim...)
%% too large if not other precautions are taken.
\setlength{\parindent}{0pt}
\setlength{\parskip}{6pt}
\raggedbottom


% Various boxes.
\newlength{\reduceboxwidth}
\setlength{\reduceboxwidth}{4in}

\newlength{\redboxwidth}
\setlength{\redboxwidth}{3.5in}

\newlength{\rboxwidth}
\setlength{\rboxwidth}{2.6in}

% These are here in case the name changes or we someday want a special
% font.
\newcommand{\REDUCE}{REDUCE}
\newcommand{\RLISP}{RLISP}

% This is useful for putting function names in \tt format in the index.
\newcommand{\ttindex}[1]{\index{#1@{\tt #1}}}

% Use this when you are speaking about problems across systems.
\newcommand{\COMPATNOTE}{{\em Compatibility Note:\ }}

\pagestyle{headings}

%% For BNF notation.

% \s{...} is a sentential form in descriptions. Enclosed \em text in <...>
\newcommand{\s}[1] {$<${\em #1}$>$}

% \meta{...} is an alternative sentential form in descriptions using \it.
\newcommand{\meta}[1]{\mbox{$\langle$\it#1\/$\rangle$}}

% \k{...} is a keyword. Just do in bold for the moment.
\newcommand{\k}[1] {{\bf #1}}

% \f is a function name. Just do this as tt.
\newcommand{\f}[1] {{\tt #1}}

% An example macro for numbering and indenting examples.
\newcounter{examplectr}
\newcommand{\example}{\refstepcounter{examplectr}
\noindent{\bf Example \theexamplectr}}

% The following are currently only used in the GENTRAN document.  However,
% there's no objection to using them elsewhere.

\begingroup
  \catcode `|=0
  \catcode `[= 1
  \catcode`]=2
  \catcode `\{=12
  \catcode `\}=12
  \catcode`\\=12
  |gdef|@xframedverbatim#1\end{framedverbatim}[#1|end[framedverbatim]]
  |gdef|@sxframedverbatim#1\end{framedverbatim*}[#1|end[framedverbatim*]]
|endgroup

\newdimen\@mcdheight

\def\@sframedverbatim{\obeyspaces\@framedverbatim}

\def\@mcdrule{\@mcdheight=\baselineskip\advance\@mcdheight by-2pt
\setbox0=\hbox{\vrule height\@mcdheight depth 2pt width 1pt}%
\ht0=\@mcdheight\dp0=0pt\wd0=1pt\box0}

\def\@mcdendrule{\@mcdheight=\baselineskip%
\setbox0=\hbox{\vrule height\@mcdheight depth 2pt width 1pt}%
\ht0=\@mcdheight\dp0=0pt\wd0=1pt\box0}

\def\@framedverbatim{\trivlist \item[]
\parskip \z@
\hrule \@height \p@ \@depth \z@ \@width\textwidth
\everypar{\global \@minipagefalse \global \@newlistfalse \if@inlabel
\global \@inlabelfalse \hskip -\parindent \box \@labels \penalty \z@ \fi
\hbox to6\p@{\rlap{\@mcdrule}\hskip\textwidth\llap{\@mcdrule}\hss}}%
\if@minipage\else\vskip\parskip\fi
\leftskip\@totalleftmargin\rightskip\z@
\parindent\z@\parfillskip\@flushglue\parskip\z@
\@tempswafalse \def\par{\if@tempswa\hbox{}\fi\@tempswatrue\@@par
\penalty\interlinepenalty}%   % fix \samepage bug
\obeylines \tt \catcode``=13 \@noligs \let\do\@makeother \dospecials}

\def\framedverbatim{\@framedverbatim \frenchspacing\@vobeyspaces
                    \@xframedverbatim}

\def\endframedverbatim{\nointerlineskip
{\everypar{}\baselineskip 4\p@\vbox to4\p@{\par\noindent\hbox
      to6pt{\rlap{\@mcdendrule}\hskip\textwidth\llap{\@mcdendrule}\hss}}%
\vskip\p@\hrule \@height \p@ \@depth \z@ \@width\textwidth}\endtrivlist}

\@namedef{framedverbatim*}{\@framedverbatim\@sxframedverbatim}

\expandafter\let\csname endframedverbatim*\endcsname =\endtrivlist

% Will print out a heading in bold, and then indent the following text.
\def\indented{\list{}{
 \itemindent\listparindent
 \rightmargin\leftmargin}\item[]}
\let\endindented=\endlist
\newenvironment{describe}[1]{\par{\bf #1}\begin{indented}}{\end{indented}}

\@ifundefined{reset@font}{\let\reset@font\@empty}{}

\endinput
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