DC Comics moved its headquarters in 1980.
In October 1970, DC briefly retired the circular logo in favour of a simple "DC" in a rectangle with the name of the title, or the star of the book; the logo on many issues of Action Comics, for example, read "DC Superman"
DC's Piranha Press and other imprints (including the mature readers line Vertigo, and Helix, a short-lived science fiction imprint) were introduced to facilitate compartmentalized diversification and allow for specialized marketing of individual product lines

