12 Pa.C.S. § 6332 – Requirements

(a) Signature.— A seller may not obtain the signature of a buyer on an application for an open-end credit agreement if it contains blank spaces to be filled in after it has been signed.
(b) Separate agreement unnecessary.— A buyer does not need to sign a separate account agreement when a new purchase is made under an existing agreement.
(c) Heading.— The following heading shall appear at the top of the agreement or directly above the space reserved for the signature of the buyer:
1. (1) "Security Agreement" if the seller retains a security interest in the goods as security for the goods or services purchased.
2. (2) "Lien Contract" if the seller obtains a lien on other goods or nonresidential real estate as security for the goods or services purchased.
3. (3) "Open-End Credit Agreement" if the seller does not obtain security for the goods or services purchased.
(d) Entire agreement.— The written agreement shall contain the entire agreement of the parties regarding the costs and terms of payment for the goods and services.