--- loncom/html/adm/help/tex/Authoring_RadiobuttonResponse.tex 2003/06/10 19:29:26 1.1
+++ loncom/html/adm/help/tex/Authoring_RadiobuttonResponse.tex 2017/01/23 20:29:42 1.4
@@ -1,7 +1,17 @@
-\label{Authoring_RadiobuttonResponse}
+\label{Authoring_RadiobuttonResponse}\index{radiobuttonresponse}
\textbf{radiobuttonresponse} implements a true/false question with
-1 correct answer. It uses the foil structure tags as described in
-\ref{Foil structure tags}, but the \emph{value} of a foil can only
+one correct answer. It uses the foil structure tags as described in
+\ref{Authoring_Foil_Structure_Tags}, but the \emph{value} of a foil can only
be \textbf{true}, \textbf{false}, or \textbf{unused}.
+It is possible to use a Perl variable for the value attribute, as long as it can only have a valid value.
+Several true foils can be specified, but only one (randomly chosen) will be displayed.
+
+Possible attributes for \texttt{} are:
+\begin{itemize}
+ \item \textbf{max}: the maximum number of foils displayed at once
+ (if more are specified, some will not be displayed)
+ \item \textbf{randomize}: set to \texttt{yes} to randomize the order of foils when displayed
+ \item \textbf{direction}: set to \texttt{horizontal} to display foils horizontally
+\end{itemize}