A word about context help on Mac

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@33507 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/cshelp.tex

@@ -21,6 +21,9 @@ Normally you will write your application so that this button is only added to a
 (use wxDIALOG\_EX\_CONTEXTHELP on Windows).
 \end{itemize}
 
+Note that on Mac OS X, the cursor does not change when in context-sensitive
+help mode.
+
 \wxheading{Derived from}
 
 \helpref{wxObject}{wxobject}