--- a/xml/prov-xml.html	Wed Oct 31 14:59:08 2012 +0000
+++ b/xml/prov-xml.html	Wed Oct 31 13:11:28 2012 -0600
@@ -1911,7 +1911,7 @@
 <h3>Media Type</h3>
 
 <p>
-The media type of PROV-XML is <span class="name">application/prov+xml</span>???
+The internet media type / MIME type for PROV-XML is "<code style="color: black">application/prov+xml</code>".
 </p>
 
 <div class="note">
@@ -1919,6 +1919,20 @@
 See <a href="http://www.w3.org/2002/06/registering-mediatype">http://www.w3.org/2002/06/registering-mediatype</a> for Register an Internet Media Type for a W3C Spec.</p>
 </div>
 
+<p>
+It is recommended that PROV-XML files have the extension "<code style="color: black">.provx</code>" (all lowercase) on all platforms.
+</p>
+
+<p>
+It is recommended that PROV-XML files stored on Machintosh HFS file systems be given a file type of "<code style="color: black">provx</code>" (all lowercase).
+</p>
+
+<div class="note">
+<p>
+Can Machintosh file types have 5 characters?  All examples I found are 4 characters.
+</p>
+</div>
+
 </section>