Re: XPointer here() function

>Can anyone give me a simple, concrete example of the here() function in
>XPointer? I don't think I understand the phrase "the node that directly
>contains the XPointer being evaluated" in the spec.

I found an example in "XPointers, Chapter 17 of the XML Bible, Updated Version"
   http://www.ibiblio.org/xml/books/bible/updates/17.html

Just to take a quick extract:

<BUTTON xlink:type="simple" xlink:href="here()/preceding::SLIDE[1]"> 
Previous </BUTTON>

I still have some issues with the definition of here() though. There is no 
guarantee that the XPointer being evaluated is contained within an XML 
node, for example - shouldn't the spec describe this as an error condition?

Matthew Wilson