\ProvidesPackage{di/appendix}
\RequirePackage{titlesec}

%After the \diappendix command every chapter becomes an appendix
%this command sets the Appendix chapter and section layout to the
%( e.g add the word Appendix before the appendix chapter title)
\newcommand* \diappendix {
	\appendix
	
	%Update layout of appendix chapter heading
	\titleformat{\chapter}
	{\LARGE\bf} 				% format
	{Appendix \thechapter.}		% label
	{3pt}						% horizontal separation between label and title body
	{}							% before code
	
	%Update the figure and table naming to include appendix letter
	\renewcommand{\thefigure}{\Alph{chapter}.\arabic{figure}}
	\renewcommand{\thetable}{\Alph{chapter}.\arabic{table}}
}