| Subject | English | Japanese |
| gen. | n basic information | 基本情報 |
| comp., MS | begin basic information unit indicator | 基本情報単位開始標識 (Bit 5 of Flag 2 of a Status-Control message. BBIUI is set on a Status-Control message corresponding to an outbound SNA request with BBIU (begin basic information unit). It is supplied solely for the use of SNA server components. Your application should not attempt to use this flag) |