Section 298. Additional sinking funds

On  or after July first nineteen
  hundred eighty-one the comptroller  may  establish  from  time  to  time
  additional  sinking  funds  to  amortize  and  redeem  any or all of the
  sinking fund bonds issued ad sold from time to time by the city  of  New
  York  on or after that date for any purpose for which sinking fund bonds
  may be authorized excepting sinking fund bonds which are redeemable from
  the sinking fund of the city of New York, the water sinking fund of  the
  city of New York, the rapid transit sinking fund of the city of New York
  or  the general sinking fund. Notwithstanding any inconsistent provision
  of section two hundred ninety-three, such additional sinking funds shall
  be established with such terms and conditions as the  comptroller  shall
  prescribe.