Changes

This [[Module Library|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.  =Conventions= All functions in this module are introduced with assigned to the <code>http://basex.org/modules/ft:</code> prefixnamespace, which is linked statically bound to the <code>ft</code> prefix.<br/>All errors are assigned to the statically declared <code>http://basex.org/moduleserrors</ftcode> namespace, which is statically bound to the <code>bxerr</code> namespaceprefix.