> If I'm the guy producing a spec, my goal is to produce a spec that is clear as possible, and only leave open those bits that are necessary to leave open. Well, that might work for internal specs when you are managing a project, but that's probably not the right way to approach standards. A standard, being the rules of the network, shall only constrain what must be constrained for interoperability. All implementations are tradeoffs. Developers will necessarily make them, based on the different resource, priorities, usage scenarios. It is much better to explain to give clear guidelines than to merely mandate an implementation. -- Christian Huitema