- \item {\bf\emph{{List by category}}.
-% ==========================================
-\subsection{Creating and executing black boxes}
-% ==========================================
-TODO
+ \item {\bf\emph{List by category}}.
+
+
+ A given box may belong to more than one \texttt{category}.\\
+ You have to consider categories like keywords to index black boxes.\\
+ Some of them are mutually exclusive.
+ A black box may be :
+ \begin {itemize}
+ \item{atomic box / complex box}\\
+ Whether it's written is C++ or it's an assembly of several black boxes (atomic or complex).\\
+ Any box is either atomic ou complex.
+ \item{example / demo / application}\\
+ Theese ones are always complex black boxes.
+ \begin {itemize}
+ \item{example}\\
+ It's just a (simple) example on how to use a given feature.
+ \item{demo}\\
+ It can be a 'good looking' (a.k.a 'sexy') example on some sophisticated work.
+ \item{application}\\
+ It's a Final application, end user intended (e.g. Subscale a huge volume, Crop a DICOM image, etc)
+ \end {itemize}
+ \item{widget}\\
+ Piece of graphical interface (based on \texttt{wxWidgets})
+ \item{Dicom}\\
+ Dicom medical image related box.
+ \item{viewer}\\
+ \item{read/write}
+ \item{mesh}
+ \item{3D Object creator}
+ \item{math}
+ \item{misc}
+ \end {itemize}
+ \end {itemize}