RE: xslt 2, forward compatibility mode.

> > If I write a stylesheet with version="15.0" as an attribute 
> > of the root element, just what am I saying?
> 
> This text is essentially unchanged from the 1.0 spec. It's actually a
> brilliant bit of future-proofing.

> Specifying version="3.0" means that the Microsoft processor 
> (or any XSLT
> 1.0 or 2.0 processor) is obliged to execute the xsl:fallback
> instruction. If you had said version="1.0" or version="2.0", then the
> processor would instead have thrown a static error saying 
> that there is
> no such instruction as xsl:perform-magic.

Thanks Michael. 
  1. I'm now clear as to its purpose.
  2. I'm less sure if this is a one off in xslt land,
     or more widely accepted in W3C as a good idea.

I'll take 2 up within W3C.

regards DaveP

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