law: Registration Act, 1908
  20. Documents containing interlineations, blanks, erasures
  
  or alterations
  (1) The registering officer may in his discretion refuses to
  
  accept for registration any document in which any interlineation, blank,
  
  erasure or alteration appears, unless the persons executing the document attest
  
  with their signatures or initials such interlineation, blank, erasure or
  
  alteration.
  (2) If the registering officer registers any such document, he shall,
  
  at the time of registering the same, make a note in the register of such
  
  interlineation, blank, erasure or alteration.