[SVGMobile12] Comments: Introduction

1.6:

The definition of "current SVG document fragment"  is confusing.  Given the 
following markup (all nodes in the SVG namespace):

<svg>
   <svg>
     <rect/>
   </svg>
</svg>

what is the "current SVG document fragment" of the <rect />?  Is it the whole 
DOM?  Or just the subtree starting at the child <svg>?  If the former, why isn't 
this what the definition says?  If the latter, then why do the parents of the 
inner <svg> matter?

In the definition of "viewport coordinate system" there seems to be an 
extraneous "then" in the phrase "then the viewport coordinate system will have".

-Boris