\newcommand{\html}[1]{}
\newcommand{\latex}[1]{#1}

\def\Model#1{
 \def\Modelname{#1}
 \subsection{#1}
 \index{#1}
 \index{models!#1}
}
\def\Auth#1{
  \noindent
 {\bf Author:}#1
}
\def\Usage#1#2{
  \noindent
  {\bf Usage:}\\
  {\tt BrFr #1 \Modelname\ #2}
}
\def\Expl{
  \vskip 0.5cm
  \noindent
  {\bf Explanation:}\\
}
\def\Example{
  \vskip 0.5cm
  \noindent
  {\bf Example:}
  \vskip 0.1cm
}
\def\Notes{
  \vskip 0.5cm
  \noindent
  {\bf Notes:}\\
}

\latex{
\def\decaysto{\vbox{
   \hbox{\raise.5ex\hbox{\vrule height10pt}
   \kern-.4025em{$\rightarrow$}}}\kern0.8ex}
}

\html{\def\decaysto{$\rightarrow$}}