[SVGMobile12] Not sure what section 15.2 paragraph 2 is saying

The first sentence of this paragraph is [1]:

   Scripting languages (such as ECMAScript) that have a notion of a
   "global scope" or a "global object" such that a single global object
   must be associated with the document (unique for each uDOM Document
   node).

This sentence fragment has a subject ("languages"), then a subordinate clause 
describing the subject, then nothing.  There is no verb.  I'm not sure what the 
sentence is trying to say.

-Boris

[1] http://www.w3.org/TR/SVGMobile12/script.html#ScriptElement