Single attribute, alternative notation

Hi All,

After today's call, I quickly added the new proposal I brought up on
today's call). Please see:
https://github.com/w3c/personalization-semantics/wiki/Comparison-of-ways-to-use-vocabulary-in-content#single-attribute-alternative-notation-new

Note, I did not update the table at the bottom of the page to add this
there.

JF
-- 
*John Foliot* | Principal Accessibility Strategist

Deque Systems - Accessibility for Good

deque.com