Draft General technique for 2.4.7

I've drafted a general technique, Giving focus to elements in an order
that follows sequences and relationships within the content[1], for SC
2.4.7. 

[1]
http://trace.wisc.edu/wcag_wiki/index.php?title=Giving_focus_to_elements
_in_an_order_that_follows_sequences_and_relationships_within_the_content

Loretta Guarino Reid
lguarino@adobe.com
Adobe Systems, Acrobat Engineering