% Met ========== onderstreept nederlandse teksten
\@ifundefined{chapter}
{%%%%%%%%%%%%%%% dit is voor article style %%%%%%%%%%%%%%%%%%%%%
\def\@part[#1]#2{\ifnum \c@secnumdepth >\m@ne \refstepcounter{part}
\addcontentsline{toc}{part}{\thepart \hspace{1em}#1}\else
\addcontentsline{toc}{part}{#1}\fi { \parindent 0pt \raggedright 
 \ifnum \c@secnumdepth >\m@ne \Large \bf Deel \thepart \par \nobreak \fi \huge
%                                        ====
\bf #2\markboth{}{}\par } \nobreak \vskip 3ex \@afterheading } 
\def\tableofcontents{\section*{Inhoud\markboth{INHOUD}{INHOUD}}
%                              ======          ======  ======
 \@starttoc{toc}}
\def\listoffigures{\section*{Lijst van figuren\markboth
%                           ==================
 {LIJST VAN FIGUREN}{LIJST VAN FIGUREN}}\@starttoc{lof}}
% =================  =================
\def\listoftables{\section*{Lijst van tabellen\markboth
%                           ==================
 {LIJST VAN TABELLEN}{LIJST VAN TABELLEN}}\@starttoc{lot}}
% ==================  ==================
\def\thebibliography#1{\section*{Referenties\markboth
%                                ===========
 {REFERENTIES}{REFERENTIES}}\list
% ===========  ===========
 {[\arabic{enumi}]}{\settowidth\labelwidth{[#1]}\leftmargin\labelwidth
 \advance\leftmargin\labelsep
 \usecounter{enumi}}
 \def\newblock{\hskip .11em plus .33em minus -.07em}
 \sloppy
 \sfcode`\.=1000\relax}
\def\theindex{\@restonecoltrue\if@twocolumn\@restonecolfalse\fi
\columnseprule \z@
\columnsep 35pt\twocolumn[\section*{Index}]
%                                   =====
 \markboth{INDEX}{INDEX}\thispagestyle{plain}\parindent\z@
%          =====  =====
 \parskip\z@ plus .3pt\relax\let\item\@idxitem}
\def\abstract{\if@twocolumn
\section*{Samenvatting}
%         ============
\else \small 
\begin{center}
{\bf Samenvatting\vspace{-.5em}\vspace{0pt}} 
%    ============
\end{center}
\quotation 
\fi}}
{%%%%%%%%%%%%%% Dit is voor report en book style %%%%%%%%%%%%%%%
\def\@part[#1]#2{\ifnum \c@secnumdepth >-2\relax \refstepcounter{part}
\addcontentsline{toc}{part}{\thepart \hspace{1em}#1}\else
\addcontentsline{toc}{part}{#1}\fi \markboth{}{}
 \ifnum \c@secnumdepth >-2\relax \huge\bf Deel \thepart \par \vskip 20pt \fi
%                                         ====
\Huge \bf #1\@endpart} 
\def\@chapapp{Hoofdstuk}
%             =========
\def\appendix{\par
 \setcounter{chapter}{0}
 \setcounter{section}{0}
 \def\@chapapp{Appendix}
%              ========
 \def\thechapter{\Alph{chapter}}}
\def\tableofcontents{\@restonecolfalse\if@twocolumn\@restonecoltrue\onecolumn
 \fi\chapter*{Inhoud\@mkboth{INHOUD}{INHOUD}}
%             ======         ======  ======
 \@starttoc{toc}\if@restonecol\twocolumn\fi}
\def\listoffigures{\@restonecolfalse\if@twocolumn\@restonecoltrue\onecolumn
 \fi\chapter*{Lijst van figuren\@mkboth
%             =================
 {LIJST VAN FIGUREN}{LIJST VAN FIGUREN}}\@starttoc{lof}\if@restonecol\twocolumn
% =================  =================
 \fi}
\def\listoftables{\@restonecolfalse\if@twocolumn\@restonecoltrue\onecolumn
 \fi\chapter*{Lijst van tabellen\@mkboth
%             ==================
 {LIJST VAN TABELLEN}{LIJST VAN TABELLEN}}\@starttoc{lot}\if@restonecol
% ==================  ==================
 \twocolumn\fi}
\def\thebibliography#1{\chapter*{Referenties\@mkboth
%                                ===========
 {REFERENTIES}{REFERENTIES}}\list
% ============  ============
 {[\arabic{enumi}]}{\settowidth\labelwidth{[#1]}\leftmargin\labelwidth
 \advance\leftmargin\labelsep
 \usecounter{enumi}}
 \def\newblock{\hskip .11em plus .33em minus -.07em}
 \sloppy
 \sfcode`\.=1000\relax}
\def\theindex{\@restonecoltrue\if@twocolumn\@restonecolfalse\fi
\columnseprule \z@
\columnsep 35pt\twocolumn[\@makeschapterhead{Index}]
%                                            =====
 \@mkboth{INDEX}{INDEX}\thispagestyle{plain}\parindent\z@
%         =====  =====
 \parskip\z@ plus .3pt\relax\let\item\@idxitem}
\def\abstract{\titlepage
\null\vfil
\begin{center}
{\bf Samenvatting}
%    ============
\end{center}}
}
%%%%%%%%%%%%%%%%%%% dit is voor allebei %%%%%%%%%%%%%%%%%%%%%%%%%%
\def\today{\number\day\space\ifcase\month%
\or jan\or feb\or maart\or apr\or mei\or juni%
%   ===    ===    =====    ===    ===    ====
\or juli\or aug\or sept\or okt\or nov\or dec\fi
%   ====    ===    ====    ===    ===    ===
\space\number\year}
\def\fnum@figure{Figuur \thefigure}
%                ======
\def\fnum@table{Tabel \thetable}
%               =====