E.g. http: / /my.domain.__ / catalog may stand for http: / /my.domain.ru / catalog and http: / /my.domain.ua / catalog.
UDM_LIMIT_URL - defines document URL limitations to limit search through subsection of database. It supports SQL% and _ LIKE wildcards, where% matches any number of characters, even zero characters, and _ matches exactly one character. E.g. http://my.domain.__/catalog may stand for http://my.domain.ru/catalog and http://my.domain.ua/catalog.