Okla. Stat. tit. 84, § 84-853: Requirements of a will

A. The will must be made in writing. It need not be written by

the testator him or herself. It may be written in any language, by

hand or by any other means.

B. The testator shall declare in the presence of two witnesses

and of a person authorized to act in connection with international

wills that the document is the will of the testator and that the

testator knows the contents of the will. The testator need not

inform the witnesses, or the authorized person, of the contents of

the will.

C. In the presence of the witnesses, and of the authorized

person, the testator shall sign the will or, if the testator has

previously signed it, shall acknowledge the signature.

D. If the testator is unable to sign, the absence of the

signature of the testator does not affect the validity of the

international will if the testator indicates the reason for the

inability to sign and the authorized person makes note thereof on

the will. In that case, it is permissible for any other person

present, including the authorized person or one of the witnesses, at

the direction of the testator, to sign the name of the testator for

the testator, if the authorized person makes note of this on the

will, but it is not required that any person sign the name of the

testator for the testator.

E. The witnesses and the authorized person shall there and then

attest the will by signing in the presence of the testator.