Impulsive increase observed in the NUV continuum (2826 Å window; solid line), the peak intensity of the Mg II k line (dashed line), and the FUV continuum emission proxy (dotted line) at pixel (pxl) 316 (blue), raster position (rr) 3, during an X-class flare on 27-10-2014 at 14:23:12. In contrast, no such behavior is seen in the time series of other pixels on the same raster position, such as pixel 200 (pink line). Refer to Fig. 3 for the SJI image.