17. The probate registrar, on being satisfied that the will was duly executed, shall carefully inspect it to see whether there are any interlineations or alterations, or erasures, or obliterations appearing in it, and requiring to be accounted for. Interlineations, alterations, erasures, and obliterations are invalid unless they existed in the will at the time of its execution, or unless, if made afterwards, they have been executed and attested in the mode required by the said enactments, or unless they have been made valid by the re-execution of the will, or by the subsequent execution of some codicil thereto. Where interlineations, alterations, erasures, or obliterations appear in the will (unless duly executed or recited in or otherwise identified by the attestation clause) an affidavit in proof of their having existed in the will before its execution shall be filed. If no satisfactory evidence is adduced respecting the time when an erasure or obliteration was made, and the words erased or obliterated are not entirely effaced, and can, on inspection of the will, be ascertained, they shall form part of the probate. Where any words have been erased which might have been of importance, an affidavit shall be required.
Interlineations, erasures, obliterations