1-16B-54. Direct mortgage loans for preferred development projects. Notwithstanding any other provision in this chapter, the authority may participate with other parties in the making of direct mortgage loans for capital improvements for preferred development projects. The interest rate and time and rate of amortization for that part of such a mortgage loan made by the authority and that made by others need not be equal. The interest rate, if any, charged by the authority shall be determined by the authority and the principal indebtedness represented by the mortgage loan and interest accrued, if any, may be forgiven on such terms and conditions as the authority in the exercise of its discretion deems appropriate.