wˌɛn ðə "ˈɛn" sˈʌbkəmˌænd fɔːɹ nˈeɪmɪŋ fˈaɪlz ɪz jˈuːzd, ðə fˈaɪlneɪm ɪz stˈoːɹd fɹʌm ˈɔfsɛt dˌiːˈɛs:fˈaɪv dˈiː tə dˌiːˈɛs:sˈɪksti sˈɛvən ðə pɹˈoʊɡɹæm sˈɛɡmənt pɹˈiːfɪks fˈaɪl kəntɹˈoʊl blˈɑːk ˈɛɹiə, mˈiːnɪŋ ðætðə pɹˈoʊɡɹæm kæn ˈoʊnli sˈeɪv fˈaɪlz ɪn ˌɛfˌeɪtˈiː ˈeɪt.θɹˈiː fˈaɪlneɪm fˈɔːɹmæt.
When the "N" subcommand for naming files is used, the filename is stored from offset DS:5D to DS:67 (the Program Segment Prefix File Control Block area), meaning that the program can only save files in FAT 8.3 filename format.