move c++ experimental warning to top of cxx node

diff --git a/flex.texi b/flex.texi
index 26f8d3ee3e6e9360592fbb34c3b471fbdfc92df8..5e7894ee107a873c923efd69a5bba7f4487ad3b4 100644 (file)
--- a/flex.texi
+++ b/flex.texi
@@ -3598,9 +3598,14 @@ characters per token.
 @node Cxx
 @chapter Generating C++ Scanners
 
+@cindex c++, experimental form of scanner class
+@cindex experimental form of c++ scanner class
+@strong{IMPORTANT}: the present form of the scanning class is @emph{experimental}
+and may change considerably between major releases.
+
 @cindex C++
-@cindex member functions in C++
-@cindex methods
+@cindex member functions, C++
+@cindex methods, c++
 @code{flex} provides two different ways to generate scanners for use
 with C++.  The first way is to simply compile a scanner generated by
 @code{flex} using a C++ compiler instead of a C compiler.  You should
@@ -3726,10 +3731,10 @@ writes the message to the stream @code{cerr} and exits.
 
 Note that a @code{yyFlexLexer} object contains its @emph{entire}
 scanning state.  Thus you can use such objects to create reentrant
-scanners.  You can instantiate multiple instances of the same
-@code{yyFlexLexer} class, and you can also combine multiple C++ scanner
-classes together in the same program using the @samp{-P} option
-discussed above.
+scanners, but see also @ref{Reentrant}.  You can instantiate multiple
+instances of the same @code{yyFlexLexer} class, and you can also combine
+multiple C++ scanner classes together in the same program using the
+@samp{-P} option discussed above.
 
 Finally, note that the @code{%array} feature is not available to C++
 scanner classes; you must use @code{%pointer} (the default).
@@ -3823,9 +3828,6 @@ first renaming @code{yyFlexLexer} as follows:
 if, for example, you used @code{%option prefix="xx"} for one of your
 scanners and @code{%option prefix="zz"} for the other.
 
-IMPORTANT: the present form of the scanning class is @emph{experimental}
-and may change considerably between major releases.
-
 @node Reentrant
 @chapter Reentrant C Scanners