diff --git a/Old_Packages/CLN/doc_tex/support/NumberTypeSupport/CLN.tex b/Old_Packages/CLN/doc_tex/support/NumberTypeSupport/CLN.tex
index ee5b56ad358..6a600e6232d 100644
--- a/Old_Packages/CLN/doc_tex/support/NumberTypeSupport/CLN.tex
+++ b/Old_Packages/CLN/doc_tex/support/NumberTypeSupport/CLN.tex
@@ -5,14 +5,9 @@
 
 \cgal\ defines the functions needed to use the number types provided by
 {\sc Cln}, the Class Library for Numbers~\cite{cln}.
-To use {\sc Cln} with \cgal, just~:
-
-\begin{itemize}
-\item add the desired compilation options, e.g.
-      \mbox{\ccc{-I/usr/local/CLN/include -L/usr/local/CLN/lib -lcln}}.
-\item include the corresponding {\sc Cln} file but with the prefix
+To use {\sc Cln} with \cgal, just install \cgal\ with {\sc Cln} support,
+and include the corresponding {\sc Cln} file but with the prefix
 \ccc{CGAL/CLN/}.
-\end{itemize}
 
 \ccInclude{CGAL/CLN/cl_integer.h}
 
@@ -25,4 +20,8 @@ The class \ccc{cl_RA}~: exact multiprecision rationals.
 And similarly for the 10 ordinary number type classes provided by {\sc Cln}~:
 \ccc{cl_SF, cl_FF, cl_DF, cl_LF, cl_I, cl_RA, cl_F, cl_R, cl_N, cl_number}.
 
+For doing IOs, you need to include, for example~:
+
+\ccInclude{cl_integer_io.h}
+
 See the {\sc Cln} documentation for additionnal details.