Evolution of loop 3. The panel layout, color, and size of the boxes for the light curves, and the slit widths are similar to those in Fig. 2. The average intensity within the 5 × 5 pixel magenta box in panel (A) is used to derive the correspondingly colored light curve in panel (B) of Fig. 5. The black arrow points to the intensity enhancement in the HRI_EUV light curve. An animation of panels (A)-(D) is available online.