"Holder of the mortgage." The holder of the mortgage as disclosed by the records of the recorder or recorders of the county or counties in which the mortgaged premises are situated.
"Indebtedness." The unpaid principal balance of advances exclusive of interest and unpaid balances of advances and other extensions of credit secured by the mortgage made for the payment of taxes, assessments, maintenance charges, insurance premiums and costs incurred for the protection of the mortgaged premises.
"Mortgage." Includes a mortgage, deed of trust or other instrument in the nature of a mortgage.
"Mortgagor." Includes the mortgagor's successors in interest as disclosed by the records of the recorder or recorders of the county or counties in which the mortgaged premises are situated.
"Open-end mortgage." A mortgage which secures advances, up to a maximum amount of indebtedness outstanding at any time stated in the mortgage, plus accrued and unpaid interest. Such a mortgage shall be identified at the beginning thereof as an "open-end mortgage" and shall clearly state that it secures future advances, which in the case of a home equity plan, the lender has a contractual obligation to make on the terms and conditions set forth in the mortgage and open-end loan agreement with the borrower. Such open-end mortgage shall be deemed to secure obligatory future advances even though the mortgage or loan agreement contains some or all of the limitations and conditions on the obligation to make advances which are permitted for home equity plans under the Home Equity Loan Consumer Protection Act of 1988 (Public Law 100-709, 102 Stat. 4725) , as implemented by Regulation Z issued thereunder in12 CFR 226.5(b) (relating to general disclosure requirements).
"Recorder." The recorder of deeds or other official in charge of recording mortgages in each county in which the mortgaged premises are located.
42 Pa.C.S. § 8143