Affidavits are usually drawn by competent attorneys or are set out in established forms. The form and substantive requirements of an affidavit depend principally upon the purpose for which it is made and the statutes of the jurisdiction where it is intended to be used. When a notarizing officer finds it necessary in the discharge of his official duties to prepare an affidavit, or when he assists a private person in preparing an affidavit (see § 92.11(b)), he should, where possible, consult the pertinent statutory provisions.