row as child of grid

In text/html, it is impossible to serialize a table that has a <tr>  
element as the child of a <table> element. (Even when a table looks  
like that in source, the parser infers a <tbody> in between.)

For this reason, the containment relationship of grid and row should  
probably be defined as ancestor-descendant instead of the current  
parent-child.

-- 
Henri Sivonen
hsivonen@iki.fi
http://hsivonen.iki.fi/