> I was going to say to make things "final" you could restrict 
> it to xsl:include only....  Or introduce a final attribute.
> 
> Personally I would be quite happy if it were limited to include only.
> 

You can override template rules (but not named templates or global
variables) with an xsl:include; you can also extend or modify keys, decimal
formats, namespace aliases, attribute sets, imported schemas, and various
other things. So limiting it to xsl:include doesn't really solve the
problem.

Regards,

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