%
% This style option is identical to the section/sebsection/partagraph definitions
% of LaTeX2e dates january 1997. The only difference is that font
% families/shapes/series vhave been parametrised in order to facilitate
% changing the fonts of section, chapter, subsection titles.
%
% If nothing is redefined, behaviour is the standard LaTeX2e behaviour,
% and the names of redefinition commands is... obvious (see below)
%

\NeedsTeXFormat{LaTeX2e}[1995/12/01]
\ProvidesPackage{varsects}
          [1998/11/28  variable section fonts/sizes]

% fonts for various section titles
\def\SubParagraphFont{\normalfont\bfseries}
\def\ParagraphFont{\normalfont\bfseries}
\def\SubSubSectionFont{\normalfont\bfseries}
\def\SubSectionFont{\normalfont\bfseries}
\def\SectionFont{\normalfont\bfseries}

% font sizes for various titles
\def\SubParagraphSize{\normalsize}
\def\ParagraphSize{\normalsize}
\def\SubSubSectionSize{\normalsize}
\def\SubSectionSize{\large}
\def\SectionSize{\Large}
\def\ChapterSize{\Huge} % the size of the chapter titles
\def\ChapterNameSize{\huge} % the size of the "Chapter" word, and its number
\def\ChapterFont{\normalfont\bfseries} % the size of the chapter title
\def\ChapterTopSpace{50pt} % spacings before, in the middle and after the
\def\ChapterMidSpace{20pt} % chapter name
\def\ChapterBotSpace{40pt}

% title spacings, in "ex" units
\def\SectionSpaceBefore{3.5}
\def\SectionSpaceAfter{2.3}
\def\SubSectionSpaceBefore{3.25}
\def\SubSectionSpaceAfter{1.5}
\def\SubSubSectionSpaceBefore{3.25}
\def\SubSubSectionSpaceAfter{1.5}
\def\ParagraphSpaceBefore{3.25}
\def\SubParagraphSpaceBefore{3.25}

% you do not need to redefine the code below, unless you know what you do...

\renewcommand\section{\@startsection {section}{1}{\z@}%
                                   {-\SectionSpaceBefore ex \@plus -1ex \@minus -.2ex}%
                                   {\SectionSpaceAfter ex \@plus.2ex}%
                                   {\SectionFont\SectionSize}}
\renewcommand\subsection{\@startsection{subsection}{2}{\z@}%
                                     {-\SubSectionSpaceBefore ex\@plus -1ex \@minus -.2ex}%
                                     {\SubSectionSpaceAfter ex \@plus .2ex}%
                                     {\SubSectionFont\SubSectionSize}}
\renewcommand\subsubsection{\@startsection{subsubsection}{3}{\z@}%
                                     {-\SubSubSectionSpaceBefore ex\@plus -1ex \@minus -.2ex}%
                                     {\SubSubSectionSpaceAfter ex \@plus .2ex}%
                                     {\SubSubSectionFont\SubSubSectionSize}}
\renewcommand\paragraph{\@startsection{paragraph}{4}{\z@}%
                                    {\ParagraphSpaceBefore ex \@plus1ex \@minus.2ex}%
                                    {-1em}%
                                    {\ParagraphFont\ParagraphSize}}
\renewcommand\subparagraph{\@startsection{subparagraph}{5}{\parindent}%
                                    {\SubParagraphSpaceBefore ex \@plus1ex \@minus .2ex}%
                                    {-1em}%
                                    {\SubParagraphFont\SubParagraphSize}}

\ifx\@makechapterhead\undefined
\else
\def\@makechapterhead#1{% the title of \chapter{something}
  \vspace*{\ChapterTopSpace}%
  {\parindent \z@ \raggedright
    \ifnum \c@secnumdepth >\m@ne
        \ChapterNameSize\ChapterFont \@chapapp\space \thechapter
        \par\nobreak
        \vskip \ChapterMidSpace
    \fi
    \interlinepenalty\@M
    \ChapterSize \ChapterFont #1\par\nobreak
    \vskip \ChapterBotSpace
  }}

\def\@makeschapterhead#1{% the title of \chapter*{something}
  \vspace*{\ChapterTopSpace}%
  {\parindent \z@ \raggedright
    \normalfont
    \interlinepenalty\@M
    \ChapterSize \ChapterFont #1\par\nobreak
    \vskip \ChapterBotSpace
  }}
\fi
\endinput