Closer look at up and down motions. Panel a: contrast enhanced X-T map from Slit S1. The cyan boxes C1, C2, and C3 highlight the chosen tracks, whose snapshots are presented in the adjacent panels. In each of these panels, the brightening that creates the track is highlighted by an arrow wherein the track itself (from the X-T map) is shown in the greyscale inset panel. Cyan dots overlaid on each of these inset tracks are indicative of the time at which the EUI snapshots were taken. Panel b: contrast enhanced X-T map from Slit M3 along with two cases highlighted as C4 and C5.