rcalc_from_country : contains "DESTINATION" country code (used in rates calculator)
rcalc_to_country : contains "TO" country code (used in rates calculator)
rcalc_method : contains "METHOD" used in rates calculator e.g: PC to Phone, SMS.
preferredcurrency : contains what currency was last selected in the rates page
aid : contains the URL of ads banner.
language : contains current selected language
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