pɹətˈɛktɪvli mˈɑːɹkt mətˈɪɹiəl mˈeɪ bˈɛɹ ɐ nˌæʃənˈælᵻɾi kˈævɪˌɑːt, ɐ dᵻskɹˈɪptɚ dᵻfˈaɪnɪŋ tʊ wˌɪtʃ nˌæʃənˈælᵻɾi ɡɹˈuːps ɪt mˈeɪ biː ɹᵻlˈiːst.
Protectively marked material may bear a nationality caveat, a descriptor defining to which nationality groups it may be released.