Internal dynamics in small loop-like features. Panel a: time-averaged image of the HRI_EUV observation on 30 May 2020. White boxes outline the locations of the six events studied here. Panels b and d: snapshots from events 1 and 2 and from event 4, respectively. In each of these snapshots, the curved blue box marks the extent of the artificial slit that is used to derive the space-time map, and the arrow points to the instantaneous position of the localized brightening in that frame. The elapsed time for each frame is given in seconds as measured from 14:54:00 UT, i.e., the start time of the observation.