Re: What is at the end of the namespace?

> > Yes, you can.  It is just an identifier.  A variable.  A 
> > mathematical symbol
> > described by a sequence of characters in a syntax defined by the first
> > part of that string leading up to the colon character.
> 
> Why have any syntax, since it's so opaque, so meaningless?!

Because it is a normative reference for syntax within a hundred other
Internet protocols.

....Roy