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[Tag] media:restriction [Description] A space-delimited list of countries where the video may or may not be played. Allowed values are country codes in ISO 3166 format. If there is no tag, it is assumed that the video can be played in all territories. The required attribute type should be set to country. Only country restrictions are supported. The required attribute relationship specifies whether the video is restricted or permitted for the specified countries. Allowed values are allow or deny. Learn more about using country restrictions. [Required?] 
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