WWW::RobotRules      (3)  - database of robots.txt-derived permissions
WWW::RobotRules      (3pm)  - database of robots.txt-derived permissions
WWW::RobotRules::AnyDBM_File (3)  - Persistent RobotRules
WWW::RobotRules::AnyDBM_File (3pm)  - Persistent RobotRules