\label{Authoring_NumericalResponse}

\textbf{numericalresponse} implements a numerical answer,
it needs an internal \textbf{textline} for the the response to go in.
It checks all styles of numerical supported in CAPA.
Possible attributes are:
\begin{itemize}
\item \textbf{answer}\index{answer}: required, specifies the correct
answer, may be either a perl list or scalar
\item \textbf{unit}\index{unit}: optional, specifies unit of correct answer, CAPA style
\end{itemize}