back to their own timelines, and also successfully sent Zero Hour Hal Jordan, pre-Flashpoint Superman and other heroes back to the events of Crisis on Infinite Earths so that the collapse of the Multiverse could be averted. From July 2015 onwards, The New 52 marking ended with the continuation of several publications and new others that did not necessarily take place within The New 52 multiverse. Advertised as DC YOU (a pun of DCU or DC Universe and the phrase "it's about you, the fans" appearing in the advertisements), DC now has an "open doors" policy to continuity, granting writers greater freedom to explore stories set outside the established New 52 Multiverse continuity, as well as to revisit other characters and concepts from DC's history as the conclusion of Convergence suggested that although the core 52 universe that now exists is the evolution of the multiverse, all the worlds still exist in some form. This was confirmed by Convergence writer Jeff King, as he stated that the reconstituted DC Multiverse is now infinite and there might be more than one Multiverse. The 2016 DC Rebirth initiative returned the original Wally West to Earth from the Speed Force and reveals that time has been stolen from his friends' memories, and the Superman of the pre-Flashpoint world, stranded in the new timeline following Convergence, assumes the role of that Earth's Superman. In Action Comics #976, the pre-Flashpoint and New 52 Supermen's histories are merged. Peter J. Tomasi explained that "the events of Action #976 reset and reshape the entire Superman timeline. Where there had been two Superman, their realities have now been fused into one timeline with just one of them". Dark Nights and Doomsday Clock It is revealed in Doomsday Clock that the New 52 was created by Doctor Manhattan as he experimented with reality, manipulating events to prevent many Golden Age heroes from gaining their powers and continually moving Superman to different points in the timeline, resulting in superheroes emerging later in history. After a confrontation with Superman, Manhattan attempts to erase his tampering and restore the Pre-Flashpoint and Pre-Crisis multiverses, as well as elements he had previously removed from the history of Earth-0 such as the Justice Society of America and Legion of Superheroes. It is later revealed that he failed, only managing to destabilise the timestream further as it attempted to accommodate events from previous versions of reality.