(a) All of the provisions of subpart B, part 207 of this chapter covering mortgages insured under section 207 of the National Housing Act, apply with full force and effect to mortgages insured under section 213 of the National Housing Act, except the following provisions:

(b) For the purposes of this subpart, all references in part 207 of this chapter to section 207 of the National Housing Act shall be deemed to refer to section 213 of the Act, and all references in part 207 of this chapter to the General Insurance Fund shall be deemed to refer to the Cooperative Management Housing Insurance Fund in cases involving mortgages which are the obligation of the Cooperative Management Housing Insurance Fund.

(c) The provisions of §§ 207.255, 207.256, 207.257, 207.261, 207.262 and 207.263 of this chapter shall apply to supplementary loans insured under section 213(j) of the Act. In connection with the foregoing provisions the terms mortgagor, mortgagee, mortgage shall be construed to mean borrower, lender, and supplementary loan, including required security instrument.

(d) Where the provisions of this subpart are applicable to supplementary loans, the terms mortgagor, mortgagee, mortgage, shall be construed to mean borrower, lender, and supplementary loan, including required security instrument.

(e) Where the provisons of this subpart are applicable to operating loss loans, the terms mortgagor, mortgagee and mortgage shall be construed to mean borrower, lender and operating loss loan, including required security instrument, respectively.