Going to any lengths... including reading outside materials

From AA's Website
http://aa.org/en_services_for_members.cfm?PageID=98&SubPage=214

The term “Conference-approved” describes written or audiovisual material approved by the Conference for publication by G.S.O. This process assures that everything in such literature is in accord with A.A. principles. Conference-approved material always deals with the recovery program of Alcoholics Anonymous or with information about the A.A. Fellowship.

The term has no relation to material not published by G.S.O. It does not imply Conference disapproval of other material about A.A. A great deal of literature helpful to alcoholics is published by others, and A.A. does not try to tell any individual member what he or she may or may not read.