OKer
n.β Β«There are, of course, many different kinds of editorβfrom fact-checkers and OKers (as theyβre known at the New Yorker), to line-editors and copy editors, to editors who grasp the big picture but skip the detail.Β» ββBlack day for the blue pencil” by Blake Morrison Observer (U.K.) Aug. 6, 2005. (source: Double-Tongued Dictionary)