=Suffixes=
In BaseX, files with the suffixes {{Code|.xq}}, {{Code|.xqm}}, {{Code|.xqy}}, {{Code|.xql}}, {{Code|.xqu}} and {{Code|.xquery}} are treated as XQuery files. By default, {{Code|.xq}} is used and recommended as suffix for main modules , and {{Code|.xqm}} is used for library modules, but the actual module type will be dynamically detected if the file is opened and parsed.
=Option Declarations=