\def\PageTwoSide{1}
\def\TwoSideStartOnRight{1}
\def\texttheta{\ensuremath{\theta}}
\hypersetup{colorlinks=true,
            linkcolor=red,
            plainpages=false}
\DefineCharacter{1025}{0401}{%
  $\mathrm{\overline{S}(\underline{freq})}$}