What does empty mean?

In XSLT 2 there is a function called empty.
http://www.w3.org/TR/xquery-operators/#func-empty

http://www.dpawson.co.uk/xsl/sect2/N3328.html#d3377e58
Defines two or three meanings for empty,


Contains no child nodes: not(node()) <empty/>

Contains no text content: not(string(.)) <empty></empty>

Contains no text other than whitespace: not(normalize-space(.))  <empty>
</empty>

Contains nothing except comments: not(node()[not(self::comment())])
 <empty><!-- comment --></empty>


Which would you assume it meant?


Regards DaveP.

**** snip here *****

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