--- a/proximity/Overview.html	Tue May 15 10:38:43 2012 +0300
+++ b/proximity/Overview.html	Tue May 15 12:00:23 2012 +0300
@@ -196,7 +196,11 @@
         </p>
         <div class="note">
           The definition of granularity i.e. how often the event is fired is
-          left to the implementation.
+          left to the implementation. Different devices may also support
+          different minimum and maximum proximities as well as different
+          resolution, thus authors are strongly advised not to assume near or
+          far proximity solely based on the <code>min</code> and
+          <code>max</code> attributes' values.
         </div>
       </section>