[Standards] Entity Capabilities Woes

[Remko Tronçon]

> Maybe we should have the examples in XEP-0115 use short numbers instead.
> Or other strings that immediately raise the question: "Huh, what does
> that particular ext string mean?'", only to be followed up with "Oh!
> Nothing.".

I thought about doing that as well. In the end, i just wrote up an
example with ext 'cs' and gave it different semantics in different
clients (chat states vs chat session negotiation).

cheers,
Remko