[xsl] (How) can I randomly access the result of a <xsl:for-each select="...?

[Ferdinand Soethe <xsl-list@xxxxxxxxxx>]

Perhaps I have searched for the wrong key words ...

Is it possible to randomly access each member of the set of nodes
created by <xsl:for-each select="... I know I can find the position of
the currently processed node with position() and use the first() and
last() to access the respective nodes. But can I also access each
individual member with something like xyz[memberNo]?

I figure that there should be a 'root' element that contains the set
but I haven't found a way to address that.

Btw: I'm using xalan-J

Thanks a lot.

--
Ferdinand Soethe