Many ancient contracts and business letters were completed with notes in which the secretary attested that he had written the document because of the inability of the person who had entrusted the job to him.
Paljudele muistsetele lepingutele ja ärikirjadele lisati märge, milles kirjutaja tõendas, et tema oli selle dokumendi teinud, kuna talle oli selle töö usaldanud isik, kes ise kirjutada ei osanud.