Gallery of magnetic B stars with signatures of magnetically-confined stellar winds in the C iv line. The typical modulation in the known magnetic B stars, the He-strong star HD 184927 (top left) and the He-weak star α Scl (bottom left) is very similar to that observed in the four stars β Cep, V2052 Oph, ζ Cas (see text for references) and σ Lup (this paper), which led to the discoveries of their magnetic fields. Note that rotation period, pulsation properties and helium peculiarity differ. In each figure the upper panel shows an overplot of all available International Ultraviolet Explorer (IUE) spectra, taken over many rotational cycles. The lower panel displays the ratio of the observed variation to the expected variation (due to the noise), showing the velocity range in the stellar rest frame within which significant variations occur. Note that the whole profile moves up and down, approximately symmetrically with respect to zero velocity. This phenomenon is only observed in magnetic early-type stars.