Changes

This [[XQuery Modules|XQuery Module]] extends the [http://www.w3.org/TR/xpath-full-text-10 W3C Full Text Recommendation] with some useful functions: The index can be directly accessed, full-text results can be marked with additional elements, or the relevant parts can be extracted. Moreover, the score value, which is generated by the <code>contains text</code> expression, can be explicitly requested from items. All functions are introduced with the <code>ft:</code> prefix, which is linked to the statically declared <code>http://basex.org/modules/ft</code> namespace.