Andrew Tween wrote:
> if we don't want to use up another character, then we could use two 
> semi-colons.
> a x:1 ;; y: 2

Actually, whatever token is used, it should NOT be one that would be a 
legal message selector.  It's new syntax, and messages and syntax should 
be distinct.  Your suggestion qualifies in that respect.  But would it 
be too similar to the single ";" character?

--Alan