client_english.ini definition, relationships, removal:

client_english.ini is a configuration file used to store essential settings of some parasite components. Usually these settings describe standard threat behavior, its functionality and additional features. Deleting such file may help to stop a parasite or disable some of its functions.
The client_english.ini file is installed and used by Optix.
Sometimes a presence of client_english.ini does not indicate that your computer is infected. It can be an essential system file or a file installed by harmless legitimate software and therefore may not pose any threat to your privacy and the system. Although such cases are quite rare, you should thoroughly examine client_english.ini before completely deleting or leaving it in the system.