Graham wrote:
On 11 Nov 2004, at 9:44 pm, David Orchard wrote:
Well, of course PDF, Office, Wordperfect don't have the notion of mandatory extensions.
Since when did Atom? I've been following this list since the start and I have no idea what you might be talking about.
mandatory = required = not optional extension = optional = not required
I ask, once again, what the bloody hell is a mandatory extension?
Extension = optional is the invalid assumption in the equations above.
An example of a mustUnderstand header from SOAP would be an encryption header. If you don't undertstand this header, there is no reason to even attempt to parse the body, as it would not make sense to you anyway.
Whether there every have been a need for such things in syndication land (or, alternately, whether we can confidently state that they will never be a need for such a thing) is a separate question.
- Sam Ruby
