I don't understand the specifics either, but according to the website http://www.blogsforterri.com/ , it was prepared by the Schindler's lawyers in hopes that Greer would sign it. He did not.
Here's what Fox News has on it:
http://www.foxnews.com/story/0,2933,148366,00.html
I getting sick. To think that Florida's legislatures, courts, and executive branches could conspire to kill Terri in such a cruel method.