AI for LC20: Revision

Marc points out that I simply missed the new format for the anonymous
and other IRIs.  I won't even try to explain how that happened.  In any
case, here's a version taking reality into account.  It should be
substantively the same as the last one.

Apologies for the mistake.

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Replace the description of [address] in section 2.1 with the following
(/italicized/ text is new or changed):

An absolute IRI representing the address of the endpoint. This
specification introduces /three /predefined [address] values as shown in
Table 2-1
<http://dev.w3.org/cvsweb/%7Echeckout%7E/2004/ws/addressing/ws-addr-core.html?content-type=text/html;%20charset=utf-8#predefaddr>.


Table 2-1. Predefined [address] values URI 	Description
"http://www.w3.org/@@@@/@@/addressing/anonymous" 	/In many cases, the
destination to which to send a particular message will be clear from
context, but it may not be possible to assign this destination a valid,
stably resolvable IRI.  To allow such endpoints to send and receive
messages, WS-Addressing defines the following pre-defined URI 
"http://www.w3.org/@@@@/@@/addressing/anonymous". Messages whose
[destination], [reply endpoint], [source endpoint] and/or [fault
endpoint] use this address MUST rely on some out-of-band mechanism for
delivery (e.g. returning the reply on the same transport connection, or
sending to a previously agreed-upon destination)./
/ "http://www.w3.org/@@@@/@@/addressing/sender"/ 	/In many cases, the
sender of a message may wish to receive responses or faults directly,
and the underlying transport may support this, even though the sender
may not have a valid, stably resolvable IRI.   To allow such endpoints
to receive messages, WS-Addressing defines the following pre-defined
URI: "http://www.w3.org/@@@@/@@/addressing/sender
<http://www.w3.org/@@@@/@@/addressing/anonymous>".  This URI MAY be used
as the [address] of the [reply endpoint] and/or [fault endpoint]
addressing property, but SHOULD NOT be so used if the transport binding
is known not to provide a return facility./
"http://www.w3.org/@@@@/@@/addressing/none" 	Messages sent to EPRs whose
[address] is this value MUST be discarded (i.e. not sent). This URI is
typically used in EPRs that designate a reply or fault endpoint (see
section *3.1 Abstract Property Definitions*
<http://dev.w3.org/cvsweb/%7Echeckout%7E/2004/ws/addressing/ws-addr-core.html?content-type=text/html;%20charset=utf-8#abstractmaps>)
to indicate that no reply or fault message should be sent.

    /Note that in some cases the implicit destination for messages sent
    to the anonymous address may be the sender.  In such a case, the
    /anonymous /and /sender /URIs will have the same effect. 
    Nonetheless, the two URIs signal different intents.  The anonymous
    URI requests the message be sent to a previously agreed-upon
    destination, which might or might not be the sender.  The sender URI
    specifically requests the message be sent to the sender, regardless
    of any out-of-band agreement.  The anonymous URI may also be used as
    a [destination] or [source endpoint], while the sender URI should
    not be used for this purpose./