Issue #9708: clarify doc of iterparse - cElementTree doesn't support the parser argument
diff --git a/Doc/library/xml.etree.elementtree.rst b/Doc/library/xml.etree.elementtree.rst
index 9ce781e..e3a2408 100644
--- a/Doc/library/xml.etree.elementtree.rst
+++ b/Doc/library/xml.etree.elementtree.rst
@@ -403,8 +403,9 @@
going on to the user. *source* is a filename or file object containing XML
data. *events* is a list of events to report back. If omitted, only "end"
events are reported. *parser* is an optional parser instance. If not
- given, the standard :class:`XMLParser` parser is used. Returns an
- :term:`iterator` providing ``(event, elem)`` pairs.
+ given, the standard :class:`XMLParser` parser is used. *parser* is not
+ supported by ``cElementTree``. Returns an :term:`iterator` providing
+ ``(event, elem)`` pairs.
.. note::