Section 81 Of Chapter 1. General Definitions From California Fish And Game Code >> Division 0.5. >> Chapter 1.

. "Signature" or "subscription" includes mark when the signer or subscriber cannot write, such signer's or subscriber's name being written near the mark by a witness who writes his own name near the signer's or subscriber's name; but a signature or subscription by mark can be acknowledged or can serve as a signature or subscription to a sworn statement only when two witnesses also sign their own names.