The nasal velar consonant /ŋ/ is generally written with the Latin letter ⟨g⟩, but occasionally as ⟨ng⟩. In electronic texts, the glottal plosive /ʔ/ may be written with an 'okina ⟨ꞌ⟩ to avoid the problems of using a straight apostrophe ⟨'⟩.[9] A special letter, ⟨ġ⟩, is sometimes used to distinguish the Spanish /ɡ/, occurring in introduced terms, from the Rapa Nui /ŋ/.[10] Similarly, /ŋ/ has been written ⟨g̈⟩ to distinguish it from Spanish g.