> -----Original Message-----
> From: James Cummings
<snip />
> 
> Although the <usage> elements are in alphabetic order by @ms I wouldn't
> want to rely on that and just test the following-sibling.  If I was
> to sort any order I'd want the <usage> elements as a whole sorted by
> @ms and all those of the same @ms sorted by @code.
>

IIC you can achieve this by 

<xsl:sort select="concat(@ms,@code)" />

Or something of the sort.

Cheers,

Andreas 

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