Nevada Revised Statutes Title 2. Civil Practice § 10.145. Signature by mark

As used in this title, signature or subscription includes mark when the person cannot write, his or her name being written near it by a person who writes his or her own name as a witness; but when a signature is by mark it must, in order that it may be acknowledged or may serve as the signature to any sworn statement, be witnessed by two persons who must subscribe their own names as witnesses thereto.