Points from 1 to 9 is repeated twice here.
[Tai Yee - MSFT] Yes, unfortunately there is an MSDN bug which is causing the list to be duplicated. The source content that the SQL Server documentation team dropped to MSDN for publishing does not contain this duplication. I filed a bug to MSDN about it, but it looks like the fix will not be available until January 2009, sorry.
The problem is with lists that are within collapsable sections. If you collapse the list by clicking the list heading
, one of the duplicated lists is removed, so that is a workaround until the fix gets applied.