On 5/12/05, Paul Hoffman <[EMAIL PROTECTED]> wrote: > > At 11:38 AM -0400 5/11/05, Robert Sayre wrote: > >Remember, if we say SHOULD, that means > >implementations don't have to interoperate with people who don't > >provide a summary. > > A receiving implementation must be able to handle all defined > elements, regardless if they are defined as MAY sent, SHOULD send, or > MUST send, so I'm not sure what you mean by "interoperate".
That sentence seems to apply to the conformance level known as MAY. "In the same vein an implementation which does include a particular option MUST be prepared to interoperate with another implementation which does not include the option (except, of course, for the feature the option provides.)" Otherwise, I'm not sure what you mean. Robert Sayre
