mustUnderstand attribute?

["Wachob, Gabe" <gwachob@visa.com>]

Folks often talk about a mustUnderstand attribute as a way of
controlling the use of extension elements in processing models
surrounding XML documents.

The idea is that a simple processor is allowed to ignore all elements it
doesn't understand unless an element has a mustUnderstand="true"
attribute. In this case, the processor, if it doesn't understand the
element, must throw up its hands and give up. This allows an extension
author to create an extension that MUST be processed for correct
functionality. Useful for security features, for example.

Do we want to put something like this in XRI? Seems like it's a good way
to future-proof current implementations and prevent breakage and
headache down the road...

	-Gabe

 
__________________________________________________ 
gwachob@visa.com
Chief Systems Architect
Technology Strategies and Standards
Visa International 
Phone: +1.650.432.3696   Fax: +1.650.554.6817