[whatwg] "must only" ambiguity

[L. David Baron]

On Monday 2007-12-24 19:07 +0100, Krzysztof Żelechowski wrote:
> My rewording for competition: 
> "Authors may use elements in the HTML namespace 
> in the contexts where they are explicitly allowed and nowhere else."

> My rewording for competition: 
> "Authors may put elements inside an element only if that element..."
> (because "only if" is a common and well understood expression.)

These won't work because they make the statement a much weaker
requirement per RFC 2119:
http://www.ietf.org/rfc/rfc2119.txt

Changing from a MUST or MUST NOT to a MAY is a substantive change,
not a rewording.

-David

-- 
L. David Baron                                 http://dbaron.org/
Mozilla Corporation                       http://www.mozilla.com/