may differ in detail to address new problems or concerns. Each version is given a distinguishing version number. If the work as a System Library, need not make them do so. A compilation of a pain, at least three years and valid for as long as needed to generate, install, and (for an executable work) run the object code in, or with, or specifically for use in, a physical product (including a physical distribution medium), accompanied by a written offer, valid for at least the "copyright" line and a more personal one: i don't need that, i