/ɑpʃənl klɔz/ – Phrase
Definition: Điều khoản không bắt buộc.
A more thorough explanation: An optional clause is a provision in a legal document, such as a contract or agreement, that provides a choice or discretion to one or more parties regarding whether to include or comply with certain terms or conditions. This clause typically allows the party or parties to decide whether to exercise a particular right or take a specific action, without being obligated to do so.
Example: In the contract, the parties may include an optional clause allowing for the extension of the agreement for an additional year.