%  "a4" document style option
%  [merge of "a4wide" and "a4"]
%  F. Matthes, 27.6.1990
%  updated for Sun 7.Sept. 1990
%
% "a4wide" document style option.
% Jean-Francois Lamy, July 86
%
% Redefines the margins so that they are more in line with
% what we are used to see.
%
% "a4" document style option.
% John Pavel, May 1987
%
% Redefines the \textheight and \topmargin for A4 paper, as opposed to US paper.

% \textwidth is not altered because A4 is narrower than US paper.
%
% \textheight is the height of text (including footnotes and figures,
% excluding running head and foot).
%
% Adjusting \textheight will adjust position of the bottom of the page.
% Must preserve "(\textheight - \topskip) divides \baselineskip".
% \topskip always appears to be 10pt.
%
%
% Following Lamport's change to other style files on 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.
%
%
%
\topmargin -1.6cm              %   seems to be necessary ???
\ifcase \@ptsize
    % mods for 10 pt
    \textheight 53\baselineskip
\or % mods for 11 pt
    \textheight 46\baselineskip
\or % mods for 12 pt
    \textheight 42\baselineskip
\fi
\advance\textheight by \topskip


\ifcase \@ptsize
    % mods for 10 pt
    \oddsidemargin  0.15 in     %   Left margin on odd-numbered pages.
    \evensidemargin 0.35 in     %   Left margin on even-numbered pages.
    \marginparwidth 1 in        %   Width of marginal notes.
    \oddsidemargin 0.25 in      %   Note that \oddsidemargin = \evensidemargin
    \evensidemargin 0.25 in
    \marginparwidth 0.75 in
    \textwidth 5.875 in % Width of text line.
\or % mods for 11 pt
    \oddsidemargin 0.1 in      %   Left margin on odd-numbered pages.
    \evensidemargin 0.15 in    %   Left margin on even-numbered pages.
    \marginparwidth 1 in       %   Width of marginal notes.
    \oddsidemargin 0.125 in    %   Note that \oddsidemargin = \evensidemargin
    \evensidemargin 0.125 in
    \marginparwidth 0.75 in
    \textwidth 6.125 in % Width of text line.
\or % mods for 12 pt
    \oddsidemargin -10 pt      %   Left margin on odd-numbered pages.
    \evensidemargin 10 pt      %   Left margin on even-numbered pages.
    \marginparwidth 1 in       %   Width of marginal notes.
    \oddsidemargin 0 in      %   Note that \oddsidemargin = \evensidemargin
    \evensidemargin 0 in
    \marginparwidth 0.75 in
    \textwidth 6.375 true in % Width of text line.
\fi