a) X-ray (negative) image from Hinode/XRT of AR 10955 on 12 May 2007. The FOVs of the two EIS channels are shown by dashed boxes. b–c) Perspective and top view on selected field magnetic lines from the potential field extrapolation of the AR, outlining its main topological features (see text for details). d) Top view on selected field lines from the extrapolation, outlining the interchange reconnection between closed and open field lines (see text for details). Open field lines are marked with a circle where they leave the computational box. The Hinode/EIS FOV is indicated in c) and d).