Three - element group的用法和樣例：
例句
- If the destination does not receive the three bytes, because of overflowing buffers, it does not send an acknowledgment.
假如目的地因為緩衝溢位而未收到這三個位元組，它不會傳送回覆。 - The second element of the tuple, called the Section, is a user-defined string which names the general category of the Access Object.
元組的第二個元素叫節，它是由用戶定義的命名許可權對象通用類的字元串。
