One of the most obvious ways that World Services tries to help NA move closer to achieving the ideals in Our Vision is through literature. NA World Services has been assigned the responsibility to be the sole publisher and distributor for NA recovery literature, and to protect that literature for the Fellowship as a whole. The Fellowship, as given voice through the groups and carried by delegates to the World Service Conference, decides what items to approve as NA recovery literature. Once published, NA literature is clearly marked as Fellowship approved.