Line profiles of the Balmer lines from 0540 in velocity space relative to LMC for the VLT spectrum in Fig. 12. Top panel: Hζ blended with [Ne III] λ3869, middle panel: Hϵ blended with [Ne III] λ3967, and bottom panel: Hγ blended with [O III] λ4363. In all panels we also show Hβ (gray) and the continuum level (black). Hβ was used as a template to subtract the expected emission from Hγ, Hϵ and Hζ using Case B line ratios (Brocklehurst 1971). The blue and red solid lines show [O III] λ4363 and [Ne III] λλ3869,3967 before and after deblending, respectively.