A more thorough explanation:

Definition: Unitas actus (yoo-ni-tas ak-təs) is a Latin term used in Roman law. It refers to the unity of action, especially in the execution of a will. This means that the process of carrying out a will must not be interrupted by any intervening act.

Example: Let's say that John wrote a will, leaving all his property to his son, Tom. According to the principle of unitas actus, the execution of the will must be carried out without any interruption. This means that the will must be followed exactly as written, and no other actions can interfere with the process of transferring the property to Tom.

Explanation: The example illustrates the principle of unitas actus in the context of executing a will. It shows that the process of carrying out a will must be done without any interruption or interference. This ensures that the wishes of the testator (the person who wrote the will) are respected and that the property is transferred to the intended beneficiary without any complications.