+After loading the package it belongs to, you can You can create an \emph{instance} of an \texttt{Add} box by
+the command \texttt{new} :
+
+\begin{verbatim}
+> new Add a
+\end{verbatim}
+
+The \texttt{'a'} at the end is the \emph{name} of the instance,
+which will be used to reference it later.
+It is important to distinguish a box \emph{type}
+and an \emph{instance} of a box type.
+The \texttt{Add} box of the package \texttt{std} is actually
+a \emph{box type} , like \texttt{int} is a data type
+in \texttt{C} langage. The \texttt{new} command allows to create
+an instance of a box type, exactly like \texttt{int i;} in
+a \texttt{C} code, it declares a variable of type \texttt{int} whose
+name is \texttt{i}.
+Of course, like in \texttt{C} Language, you can declare multiple boxes of the
+same type in \bbi. \\
+
+You can ask information about a given black box :\\