| 1. | Used to synchronize access to the file control block 用于同步对文件控制块的访问。 |
| 2. | An isapi extension control block Isapi扩展控制块。 |
| 3. | Swap data - set control block 调换数据集控制块 |
| 4. | Acb adapter control block 适配器控制块 |
| 5. | Access control block acb 接入控制块 |
| 6. | Transmit control block 传输控制块 |
| 7. | Event - control block ec 事件控制块 |
| 8. | Station control block sc 站控制块 |
| 9. | Process - control block 过程控制块 |
| 10. | Task control block tc 任务控制块 |