TL;DR: In this article, a retractable cable or cord, wound on a spring biased reel, is used to attach a fixed part of the inside of the trunk proper to a fixed hinged lid.
Abstract: A retractable cable or cord, wound on a spring biased reel, which is removably secured to the inside of the hinged trunk lid. The cable has anchor means for attaching its free end to a fixed part of the inside of the trunk proper.