A more thorough explanation:

A note verbal is a type of diplomatic communication that is usually written in the third person and is not signed. It is often used to explain a country's position or to request certain actions. It is also known as a note verbale.

When a country sends a diplomatic message or note of protest, they may also include a note verbal to further explain their position. For example, if a country is protesting against another country's actions, they may include a note verbal to explain why they believe the actions are wrong and what they would like the other country to do to rectify the situation.

Another example of a note verbal is when a country is requesting assistance from another country. They may include a note verbal to explain why they need the assistance and what specific actions they would like the other country to take.

These examples illustrate how a note verbal is used to provide additional information or to make a request in a diplomatic context.