5. Collateral Covered by Other Statute or Treaty. One evidentiary purpose of the formal requisites stated in subsection (b) [Maine cite subsection (2)] is to minimize the possibility of future disputes as to the terms of a security agreement (e.g., as to the property that stands as collateral for the obligation secured). One should distinguish the evidentiary functions of the formal requisites of attachment and enforceability (such as the requirement that a security agreement contain a description of the collateral) from the more limited goals of "notice filing" for financing statements under Part 5, explained in Section 9-502 [Maine cite section 9-1502], Comment 2. When perfection is achieved by compliance with the requirements of a statute or treaty described in Section 9-311(a) [Maine cite section 9-1311, subsection (1)], such as a federal recording act or a certificate-of-title statute, the manner of describing the collateral in a registry imposed by the statute or treaty may or may not be adequate for purposes of this section and Section 9- 108 [Maine cite section 9-1108]. However, the description contained in the security agreement, not the description in a public registry or on a certificate of title, controls for purposes of this section.

6. Debtor's Rights; Debtor's Power to Transfer Rights. Subsection (b)(2) [Maine cite subsection (2), paragraph (b)] conditions attachment on the debtor's having "rights in the collateral or the power to transfer rights in the collateral to a secured party." A debtor's limited rights in collateral, short of full ownership, are sufficient for a security interest to