Emphasize the requirement that Python.h be included first more strongly.
Closes SF bug #837228; backporting for Python 2.3.4.
diff --git a/Doc/ext/extending.tex b/Doc/ext/extending.tex
index 95e4546..c50714e 100644
--- a/Doc/ext/extending.tex
+++ b/Doc/ext/extending.tex
@@ -46,9 +46,12 @@
which pulls in the Python API (you can add a comment describing the
purpose of the module and a copyright notice if you like).
-Since Python may define some pre-processor definitions which affect
-the standard headers on some systems, you must include \file{Python.h}
-before any standard headers are included.
+
+\begin{notice}[warning]
+ Since Python may define some pre-processor definitions which affect
+ the standard headers on some systems, you \emph{must} include
+ \file{Python.h} before any standard headers are included.
+\end{notice}
All user-visible symbols defined by \file{Python.h} have a prefix of
\samp{Py} or \samp{PY}, except those defined in standard header files.