GRHS and EGRHS clusters are shown in the planes formed by the morphological parameters, namely, the concentration parameter (c₁₀₀), the centroid shift (w_500pe), and the power ratio (P₃/P₀). The clusters that are non-detections (empty circles), those with radio haloes (red filled circles), those with mini-haloes (blue squares), and those with candidate radio haloes (A1682, Z5247, A2552, and Z2661; red stars) are marked. The grey dashed lines mark the boundaries proposed by Cassano et al. (2010) between the merging and the relaxed clusters for each of the parameters.