(a) A will shall be in writing and shall be signed by the testator or by some other individual in the testator’s presence and at the testator’s express direction. A testator may sign by mark or by any name that is intended to authenticate the instrument as the testator’s will.

(b) A will shall be attested and subscribed in the presence of the testator by two or more competent witnesses. A witness to a will may attest by mark. Another individual may not subscribe the name of a witness, even in that witness’s presence and at that witness’s direction.

(c) A codicil shall be executed by the testator and attested and subscribed by witnesses with the same formality as a will.

(d) A will or codicil that was executed or attested pursuant to the authority of the Governor’s Executive Order 04.09.20.01 shall not be treated as invalid solely because it was not executed or attested in the testator’s physical presence.