Ind. Code § 32-21-2-8

Sec. 8. (a) If before a public officer authorized to receive acknowledgment of deeds:

(1) the grantor of a deed intends to sign the deed with the grantor's mark; and

(2) in all other cases when the public officer has good cause to believe that the contents and purport of the deed are not fully known to the grantor;

it is the duty of the public officer before signature to fully explain to the grantor the contents and purport of the deed.

(b) The failure of the public officer to comply with subsection (a) does not affect the validity of a deed.