Affidavit certification: deponent unfamiliar with language must have contents read and understood before signing to confirm validity. When a deponent is unfamiliar with the affidavit language or is blind or illiterate, the affidavit contents must be audibly read or translated into a language known to the deponent; the deponent must appear to understand the contents and then affix his signature, mark, or left thumb impression. The certification records that the contents were read/translated and that the deponent seemed to understand, and is followed by the certifier's signature, name, designation and date.