| 摘要 |
<p>A container for use in the mailing of flat recording media, discettes having computer programs or the like recorded thereon for example, comprises a pair of cover members which cooperate to define a pocket therebetween, at least two parts of these cover members being relatively movable with respect to each other to open and close the container. The relatively movable cover parts are provided with receivers for closure elements, the closure elements and the cover member receivers being designed such that once the container has been closed and the closure elements inserted the container may not be re-opened without destruction of the closure elements.</p> |
