> The following variable should return a sequence of names that 
> only appear in EVERY section.
>  
> 	<xsl:variable name="ubiquitous-names"
> 			  select="distinct-values(sections/section/name
> 			  [not(contains(., 'new entry'))]
> 			  [every $s in sections/section 
> satisfies $s/name = .])" />

The context for sections/section is wrong. It needs to be
current()/sections/section.
> 
> So  [every $s in sections/section satisfies $s/name = .] 
> doesn't seem to have any effect.
> 

If X is an empty sequence, then "every $x in X satifies expr" is always true
(which sometimes surprises non-mathematicians).

Michael Kay
http://www.saxonica.com/