... completeness, and internal structure, (3) a formal feature of encapsulation, and (4) a formal expressional feature.Again, contrary to the form- skeptic and the law-is-policy reductionist, a statu-tory ... Pursuant to, and within this overall form and these formal criteria, theparties make various choices of contractual form and complementary content. In the end, form leaves significant imprints and ... merely against prior original contracting parties, butagainst third parties generally. Again, these accumulated rights may not only bewide-ranging, but extend far into the future.27Ownership interests...