evidence of due exaction of will - affidavits, an affidavit confirmation of full name of D if not signed right, evidence of knowledge + approval if no attestation clause (witnesses) obliterations - confirmation where each such alteration existed at date of execution, document ref in the will, affidavits from witnesses if uncertain about date of execution, if attempted revocation, (staples) affidavits / explained - court accept st of trust in place of affidavits.