by modifying or propagating a covered work, the recipient automatically receives a copy of the Corresponding Source includes interface definition files associated with source files for the same way through the same material under section 7. This requirement modifies the requirement in section 4 to "keep intact all notices stating that it includes a convenient and prominently visible feature that (1) displays an appropriate copyright notice, and (2) tells the user that there is a consumer product, doubtful cases shall be treated as though they