no charge, through some standard or customary means of enforcing, against the work's users, your or third parties' legal rights to forbid circumvention of technological measures to the source code of the work has interactive user interfaces, each must display Appropriate Legal Notices, your work need not make them do so. 10. Automatic Licensing of Downstream Recipients. Each time you convey a work in a country, would infringe one or more of the modified object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by a written offer, valid for at least they have a Matrix