%%
%% This is file `a4.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% a4.dtx  (with options: `package')
%% 
%% Copyright (C) 1994-1996 Nederlandstalige TeX Gebruikersgroep.
%% All rights reserved.
%% For additional copyright information see further down in this file.
%% 
%% This file is part of the NTG document classes distribution
%% ----------------------------------------------------------
%% 
%% This file is distributed in the hope that it will be useful,
%% but WITHOUT ANY WARRANTY; without even the implied warranty of
%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
%% 
%% 
%% IMPORTANT NOTICE:
%% 
%% For error reports in case of UNCHANGED versions see readme file.
%% 
%% Please do not request updates from us directly.  Distribution is
%% done through Mail-Servers and TeX organizations.
%% 
%% You are not allowed to change this file.
%% 
%% You are allowed to distribute this file under the condition that
%% it is distributed together with all files mentioned in 00readme.txt.
%% 
%% If you receive only some of these files from someone, complain!
%% 
%% You are NOT ALLOWED to distribute this file alone.  You are NOT
%% ALLOWED to take money for the distribution or use of either this
%% file or a changed version, except for a nominal charge for copying
%% etc.
\ifx\ProvidesPackage\undefined
  \def\ProvidesPackage#1[#2 #3 #4]{%
    \wlog{LaTeX Package `#1' #3 <#2> #4}}
\fi
\ProvidesPackage{a4}
       [1995/09/25 v1.2e A4 based page layout]
\ifx\documentclass\undefined
\else
  \DeclareOption{widemargins}{\WideMargins}
\fi

\topmargin 0pt
\ifcase \@ptsize
    \textheight 53\baselineskip
\or
    \textheight 46\baselineskip
\or
    \textheight 42\baselineskip
\fi
\advance\textheight by \topskip
\ifcase \@ptsize
    \textwidth      5.00in
    \marginparwidth 1.00in
  \if@twoside
    \oddsidemargin  0.55in
    \evensidemargin 0.75in
  \else
    \oddsidemargin  0.55in
    \evensidemargin 0.55in
  \fi
\or
    \textwidth      5.20in
    \marginparwidth 1.00in
  \if@twoside
    \oddsidemargin  0.45in
    \evensidemargin 0.65in
  \else
    \oddsidemargin  0.45in
    \evensidemargin 0.45in
  \fi
\or
    \textwidth      5.70in
    \marginparwidth 0.80in
  \if@twoside
    \oddsidemargin  0.20in
    \evensidemargin 0.40in
  \else
    \oddsidemargin  0.20in
    \evensidemargin 0.20in
  \fi
\fi
\def\WideMargins{%
  \newdimen\ExtraWidth
  \ifcase \@ptsize
    \ExtraWidth = 0.5in
    \@widemargins
  \or
    \ExtraWidth = 0.5in
    \@widemargins
  \or
    \ExtraWidth = 0.7in
    \@widemargins
  \fi\let\WideMargins\relax\let\@widemargins\relax}
{\def\do{\noexpand\do\noexpand}
 \xdef\@preamblecmds{\@preamblecmds \do\WideMargins}
}
\def\@widemargins{%
    \global\advance\textwidth by -\ExtraWidth
    \global\advance\marginparwidth by \ExtraWidth
    \if@twoside
      \tw@sidedwidemargins
    \else
      \@nesidedwidemargins
    \fi}
\def\tw@sidedwidemargins{%
    \if@reversemargin
      \@tempdima=\evensidemargin
      \advance\@tempdima by -\oddsidemargin
      \advance\oddsidemargin by \ExtraWidth
      \advance\oddsidemargin by \@tempdima
      \advance\evensidemargin by -\@tempdima
    \else
      \advance\evensidemargin by \ExtraWidth
    \fi}
\def\@nesidedwidemargins{%
    \if@reversemargin
      \advance\oddsidemargin by \ExtraWidth
      \advance\evensidemargin by \ExtraWidth
    \fi}
\ifx\documentclass\undefined
\else
  \ProcessOptions
\fi
%% \CharacterTable
%%  {Upper-case    \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
%%   Lower-case    \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
%%   Digits        \0\1\2\3\4\5\6\7\8\9
%%   Exclamation   \!     Double quote  \"     Hash (number) \#
%%   Dollar        \$     Percent       \%     Ampersand     \&
%%   Acute accent  \'     Left paren    \(     Right paren   \)
%%   Asterisk      \*     Plus          \+     Comma         \,
%%   Minus         \-     Point         \.     Solidus       \/
%%   Colon         \:     Semicolon     \;     Less than     \<
%%   Equals        \=     Greater than  \>     Question mark \?
%%   Commercial at \@     Left bracket  \[     Backslash     \\
%%   Right bracket \]     Circumflex    \^     Underscore    \_
%%   Grave accent  \`     Left brace    \{     Vertical bar  \|
%%   Right brace   \}     Tilde         \~}
%%
\endinput
%%
%% End of file `a4.sty'.
