\renewcommand{\tiny}{\@setsize\tiny{9.5pt}\viiipt\@viiipt}
\renewcommand{\footnotesize}{\@setsize\footnotsize{12pt}\xpt\@xpt}
\renewcommand{\small}{\@setsize\small{14pt}\xiipt\@xiipt}
\renewcommand{\normalsize}{\@setsize\normalsize{20pt}\xivpt\@xxpt}
\renewcommand{\large}{\@setsize\large{22pt}\xviipt\@xviipt}
\renewcommand{\Large}{\@setsize\Large{25pt}\xxpt\@xxpt}

%\renewcommand{\baselinestretch}{1.1}

%\newenvironment{slide}{\begin{center}\normalsize\vspace{0.2in}\vfill}{\vfill\end{center}\clearpage}
\newenvironment{slide}{\normalsize\vspace{0.2in}\vfill}{\vfill\clearpage}

\flushbottom
\oddsidemargin 0.0in 
\evensidemargin 0.0in
\marginparwidth 40pt 
\marginparsep 10pt
\topmargin 0pt 
\headsep .5in
\headheight .5in
\textheight 8.1in 
\textwidth 6.5in

\normalsize