Fig. 4.
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Change in the median index value derived for stars identified as spatially clustered, 
, in the resolved populations: top panel: general, middle panel: high-mass, and bottom panel: low - to intermediate-mass. Symbols and colours indicate the binary fraction of the host cluster: f = 0.0 (black circles), f = 0.25 (blue crosses), f = 0.5 (green triangles).
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