Comparison of equivalent widths (EW) for N iiiλ4097 and λλ4640/42. All atmospheric models calculated with “pseudo line-blanketing” (see text). Black diamonds: results from MH; red triangles: new fastwind calculations with “mixed” N iii ionic model (new level structure, but important transition data from MH); purple squares: new fastwind calculations with new N iii model; blue asterisks: as squares, but DR-contribution to 3d level diminished by a factor of two. Here and in the following, positive and negative EWs refer to absorption and emission lines, respectively.