Another XQuery feature related to natural languages are '''Collations'''. By default, string comparisons in XQuery uses are based on the Unicode codepoint order. The default namespace URI {{Code|http://www.w3.org/2003/05/xpath-functions/collation/codepoint}} collation, which compares strings by the Unicode codepoint orderspecifies this ordering. Other All other collation URIs are implementation-defined; in . In BaseX, the following syntax is supported: