Index: trunk/ippdor/doc/Full/link_ipp.tex
===================================================================
--- trunk/ippdor/doc/Full/link_ipp.tex	(revision 33790)
+++ trunk/ippdor/doc/Full/link_ipp.tex	(revision 33791)
@@ -2,3 +2,39 @@
 \label{chap-ipp}
 
-TODO
+\section{Changing the IPP}
+\label{sec-changing-ipp}
+
+\begin{enumerate}
+\item Checkout the new tag from the SVN repository in the dedicated
+  \texttt{ipp} directory, e.g. (for the ipp-20120404 tag):
+\begin{verbatim}
+ippdor@ippc18 ~ $ cd ipp
+ippdor@ippc18 ~/ipp $ svn co https://svn.pan-starrs.ifa.hawaii.edu/repo/ipp/tags/ipp-20120404
+\end{verbatim}
+\item Redefine (locally, that is, for the shell session where the IPP
+  will be compiled) the IPP version with the \texttt{psconfig} command, e.g.:
+\begin{verbatim}
+ippdor@ippc18 ~/ipp $ psconfig 20120404
+\end{verbatim}
+\item Compile and install the IPP as usual, e.g.:
+\begin{verbatim}
+ippdor@ippc18 ~/ipp $ cd ipp-20120404/psconfig
+ippdor@ippc18 ~/ipp $ ./psbuild -dev -extbuild
+\end{verbatim}
+\item Have a cup of coffee
+\item Change the symbolic links in the
+  \texttt{\$HOME/psconfig/20110920}\footnote{\texttt{20110920} is
+    related to the ippdor version and has nothing to do with the IPP
+    version} directory for \texttt{current} and
+  \texttt{current.lin64}, e.g.:
+\begin{verbatim}
+ippdor@ippc18 ~/ipp $ cd ~/psconfig/20110920
+ippdor@ippc18 ~/ipp $ rm current current.lin64
+ippdor@ippc18 ~/ipp $ ln -s 20120404.lin64 current
+ippdor@ippc18 ~/ipp $ ln -s 20120404.lin64 current.lin64
+\end{verbatim}
+\item Test it on a small sample of data! (even if you can already
+  check if the correct version is used with, for instance,
+  \texttt{ppImage --version})
+\end{enumerate}
+