add a heavy box around warning notices to make them really stand out in the
PDF and PostScript versions of the docs (the CSS already does this for HTML)
diff --git a/Doc/texinputs/howto.cls b/Doc/texinputs/howto.cls
index 14e357a..936e1fa 100644
--- a/Doc/texinputs/howto.cls
+++ b/Doc/texinputs/howto.cls
@@ -7,6 +7,7 @@
[1998/02/25 Document class (Python HOWTO)]
\RequirePackage{pypaper}
+\RequirePackage{fancybox}
% Change the options here to get a different set of basic options, This
% is where to add things like "a4paper" or "10pt".