In the C programming language, and in Unix conventions, the null character is used to terminate text strings; such null-terminated strings can be known in abbreviation as ASCIZ or ASCIIZ, where here Z stands for "zero".
ɪnðə sˈiː pɹˈoʊɡɹæmɪŋ lˈæŋɡwɪdʒ, ænd ɪn jˈuːnɪks kənvˈɛnʃənz, ðə nˈʌl kˈæɹɪktɚɹ ɪz jˈuːzd tə tˈɜːmᵻnˌeɪt tˈɛkst stɹˈɪŋz; sˈʌtʃ nˈʌltˈɜːmᵻnˌeɪɾᵻd stɹˈɪŋz kæn biː nˈoʊn ɪn ɐbɹˌiːvɪˈeɪʃən æz ɐssˈɪz ɔːɹ ɐssˈɪɪz, wˌɛɹ hˈɪɹ zˈiː stˈændz fɔːɹ "zˈiəɹoʊ".