and allows the info to work through this section.
\begin{funcdesc}{rms}{fragment, width}
Return the root-mean-square of the fragment, i.e.
+%begin{latexonly}
+\iftexi
+%end{latexonly}
the square root of the quotient of the sum of all squared sample value,
divided by the sumber of samples.
%begin{latexonly}
+\else
% in eqn: sqrt { sum S sub i sup 2 over n }
\begin{displaymath}
\catcode`_=8
\sqrt{\frac{\sum{{S_{i}}^{2}}}{n}}
\end{displaymath}
+\fi
%end{latexonly}
This is a measure of the power in an audio signal.
\end{funcdesc}