Designation under section 80L: specified corporate bonds issued during a defined issuance window qualify for the clause's tax treatment. Central Government, under clause (ii) of sub section (1) of section 80L of the Income tax Act, specifies a series of 10 year bonds issued by the Industrial Reconstruction Corporation of India during a defined short issuance window in November 1979 as qualifying instruments for the purposes of that clause, thereby designating them as specified bonds for the statute's tax treatment.