-possible, into this \CGG{} version and for several years has been
-adding numerous features, updates, and fixes. All of these software
-contributions are appreciated and each individual is thanked and
-commended for their efforts. The \CGG{} software is under \href{https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html}{GPLv2+}
-license. % Refer to:
-% {\small\url{https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html}}
-
-As for this manual, the
-\href{https://www.gnu.org/licenses/fdl-1.3.en.html}{GNU Free
- Documentation License} (GNU FDL or simply GFDL) is a copyleft
-license for free documentation, designed by the Free Software
-Foundation (FSF) for the GNU Project. It is similar to the GNU
-General Public License, giving readers the rights to copy,
-redistribute, and modify (except for "invariant sections") a work
-and requires all copies and derivatives to be available under the
-same license. The GFDL was designed for manuals, textbooks, other
-reference and instructional materials, and documentation which often
-accompanies GNU software.% Refer to:
-% {\small\url{https://en.wikipedia.org/wiki/GNU_Free_Documentation_License}}
-
-\textbf{This is a copy of the header from the original source code.}
-\begin{lstlisting}[numbers=none,basicstyle=\footnotesize]
+possible, into this \CGG{} version and has been adding numerous
+features, updates, and fixes.
+
+{\small \textbf{NOTE1:} This manual is a Work in Progress: monthly parts are added to cover the new features introduced in \CGG{}. The texts are continuously revised to make them clearer and more complete. In order to have a better and better product we rely on the suggestions and criticisms of our readers. Do not hesitate to let us know your opinions. For this continuous variability, we recommend that you download the manual at least once a month, during the release of \CGG{}, so that its content is always up to date.
+
+\textbf{NOTE2}: this manual, in the HTML version present on the website, is the base of the \textit{Context Help} that can be called inside the program. For each window, button and plugins we can open the relative web page of the manual with \texttt{ALT/h} keys. More details in \nameref{sec:help_context_help}.}
+
+The \CGG{} software is under
+\href{https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html}{GPLv2+}
+license. A notice of this is included in the software and shown here.
+
+\begin{lstlisting}[basicstyle=\footnotesize]