> The following appears to work with the latest Saxon in an 
> XSLT v2 style sheet.
>     <xsl:for-each select="position()">
> 
> My take on this is that position() returns a number and that 
> number is then used in a sequence of one.  Am I understanding 
> this correctly and should this be how all XSLT v2 processors behave?

Yes. It doesn't seem a very useful construct, but that's what it does. I can
imagine a use for

<xsl:for-each select="position()-1, position(), position()+1">

But wherever you can use a sequence of several numbers, you can also use a
sequence containing a single number.

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