XSL sheet Optimisation

Hello,

Some of my nodes have an id attribute, but can be at any depth of the tree.
For example I have a <theme id="t1"> tag. So when I want to "reach" it from
the root node, I have to use this XPath expression :

<xsl:apply-templates select="//theme[@id='t1']" />

Will the XSL processor (I use Xalan in Cocoon) process every node until it
finds the one ? Just like the XPath expression "://*[name(.)='theme' and
@id='t1']" ? Or is it better potimized ?

Thanks !
Frederic


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