[Dev] iMIP, iTIP and iCalendar tutorial pointer

[Lisa Dusseault]

A long time ago I gave a tutorial on the calendar standards that then  
existed, to allow people to send around invitations, respond.   The  
notes are still up on our wiki of course:

<http://wiki.osafoundation.org/bin/view/Journal/LisaDusseault20041005>

What that doesn't provide is a technical understanding of how we'd  
combine that with sharing but let's see if I can make some quick  
sense of that.
  - The meeting organizer can send out an iMIP invitation (with an  
iTIP REQUEST method) in email
	- the email can have a URL to a CalDAV/WebDAV representation of the  
event -- there's a well understood field for that in iCalendar
	- Any other structured information that we want to add to iCalendar,  
we can (X-OSAF-CUSTOMPROPERTY)
  - People who receive the invitation:
	-  can almost always reply (accept, counter) because this is a  
normal part of the standard workflow and relies only on email  
functionality
	- can *also* go to the shared version of the event, if they have  
access to the sharing server, and if they have read access
	- can even collaborate on the shared version of the event, if they  
have write access too.

How we coordinate replies together with collaborative changes, is  
going to be somewhat of a challenge -- we haven't even fully  
implemented handling conflicts for regular sharing scenarios, let  
alone scenarios where some of the changes go to the organizer via  
email instead of directly to the server.

Lisa