The Country code plugin replaces the country code abbreviations in the origin field by the full country names. Example: If the origin field read "D/I" before using the plugin, it will afterwards read "Germany/Italy". You will see these changes in the program table as well as in the program info dialog.
Attention: This plugin modifies the origin field directly during downloading new TV data. That means it will not change the origin field for already existing program info. The same is true for deactivation or deinstallation of the plugin: Already modified program data will stay modified.