Final answer:
A handwritten will is known as a holographic will. It is a will that is entirely handwritten by the testator and does not require witnesses.
Step-by-step explanation:
A handwritten will is known as a holographic will. It is a will that is entirely handwritten by the testator (the person making the will) and does not require witnesses. It is important to note that the requirements for a valid holographic will may vary depending on the jurisdiction.