+ Lists of currently available boxes from installed packages
+ \begin{itemize}
+ \item {\bf\emph{Alphabetical list}} : %This is the 'zero-level' of retrieving.
+ \item {\bf\emph{List by package}} Boxes indexed by package
+ \item {\bf\emph{List by category}} :
+ Each box is indexed by a list of keywords, called 'categories', such as '\texttt{read/write}',
+ '\texttt{filter}', '\texttt{viewer}', ...
+ A given box may belong to more than one \texttt{category}, however some categories are mutually exclusive.
+ Standard categories are :
+ \begin {itemize}
+ \item\texttt{atomic box}/\texttt{complex box}\\
+ Whether it's an 'atomic' unit written is C++ and available in binary form in a package or it's an assembly of several black boxes (atomic or complex) which is described in \bbs script language.\\
+ Any box is either atomic ou complex.\\
+ Any pipeline described in a \bbs script is itself viewed as a complex black box hence is tagged as belonging to this category.
+ \item\texttt{example} / \texttt{demo} / \texttt{application}\\
+ These ones are scripts which produce a result when executed (i.e. they
+ execute a pipeline like \texttt{exampleSlider} above), as oposite to the scripts which only define complex boxes but do not instanciate and execute boxes.
+ \begin {itemize}
+ \item\texttt{example} : It's just a (simple) example, for programmers, on how to use a given feature. The \texttt{Examples} link on the starting page links to the list of the boxes of this category.
+ \item\texttt{demo} : It can be a 'good looking' (a.k.a 'sexy') example on some sophisticated work, done only by using \texttt{bbtk}. The \texttt{Demos} link on the starting page links to the list of the boxes of this category.
+ \item\texttt{application} : It's a final application, end user intended (e.g. Subscale a huge volume without loading it in memory, Crop a DICOM image, etc.)
+ \end {itemize}
+ \item\texttt{widget} : A piece of graphical interface (based on \texttt{wxWidgets})
+ \item\texttt{dicom} : Dicom medical image-related box.
+ \item\texttt{viewer} : A box allowing to view something (e.g. an image).
+ \item\texttt{read/write} : An I/O-related box
+ \item\texttt{mesh} : A mesh-related box
+ \item\texttt{filter} : A filter, mainly image filters.
+ \item\texttt{image} : An image-related box
+ \item\texttt{3D object creator} : A box which creates a 3D object to be injected into a 3D view (e.g. a plane, a surface).
+ \item\texttt{math} : Math
+ \item\texttt{misc} : Miscellaneous...
+ \end {itemize}
+ Remark that the list of categories is 'auto-extensible' : each time a new box is created which belongs to a new category and the boxes list is regenerated, then the new category appears in the list, holding the new box. The above list only contains the categories used in the packages provided with current \bbtk release.
+ \item {\bf\emph{ List of adaptors}} : The adaptors are a special type of black box which are used internaly to perform type conversions. Thought there are not end user intended, you may see their list. Adaptors belong to the \texttt{adaptor} category.
+ \end {itemize}
+
+% ==========================================
+\subsubsection{The Package Browser}
+\label{Package_Browser}