Attestation

[from Lat. attestari, to witness.] The testifying to, or witnessing the signature or execution of a deed or other instrument, by the witnesses; including the subscription of their names. Blackstone considers it the same as " execution in the presence of witnesses."

2 BL Com. 307.

But txicutian and attestation are oloarly distinct formalities; the former being the act of the party, the latter of the witnesui only.