1 files changed, 58 insertions, 1 deletions
diff --git a/lib/diameter/doc/src/notes.xml b/lib/diameter/doc/src/notes.xml
index 8fdb88749e..eafddd7d1e 100644
--- a/lib/diameter/doc/src/notes.xml
+++ b/lib/diameter/doc/src/notes.xml
@@ -40,8 +40,65 @@ first.</p>
 <title>diameter 0.9</title>
 
 <p>
-First OTP release.</p>
+Initial release of the diameter application.</p>
 
+<p>
+Known issues or limitations:</p>
+
+<list>
+
+<item>
+<p>
+Some agent-related functionality is not entirely complete.
+In particular, support for proxy agents, that advertise specific
+Diameter applications but otherwise relay messages in much the same
+way as relay agents (for which a <seealso
+marker="diameter_app#handle_request">handle_request/3</seealso>
+callback can return a <c>relay</c> tuple), will be completed in an
+upcoming release.
+There may also be more explicit support for redirect agents, although
+redirect behaviour can be implemented with the current
+functionality.</p>
+
+</item>
+
+<item>
+<p>
+There is some asymmetry in the treatment of messages sent as
+<c>diameter_header/avp</c> records and those sent in the "normal"
+fashion, and not all of this is documented.
+This is related to the previous point since this form of sending a
+message was introduced specifically to handle relay agent behaviour
+using the same callback interface as for client/server behaviour.</p>
+</item>
+
+<item>
+<p>
+The User's Guide is currently quite thin.
+The introductory chapter followed by the examples (in the application
+<c>examples</c> subdirectory) may be sufficient
+for those having some familiarity with the Diameter protocol but the
+intention is to provide more introductory text.
+The reference documentation is quite complete, although some points
+could likely be expanded upon.</p>
+</item>
+
+<item>
+<p>
+The function <seealso
+marker="diameter#service_info">diameter:service_info/2</seealso>
+can be used to retrieve information about a started service
+(statistics, information about connected peers, etc) but
+this is not yet documented and both the input and output may change
+in the next release.</p>
+</item>
+
+
+</list>
+
+<p>
+See <seealso marker="diameter_soc">Standards Compliance</seealso> for
+standards-related issues.</p>
 </section>
 
 </chapter>