$\Xi$ (left) and $\Omega$ (right) mean $\pt$ (⟨$\pt$⟩) as a function of charged-particle multiplicity measured at midrapidity in pp, p–Pb and Pb–Pb collisions, as indicated in the legend. The red markers show the results in the three HM classes presented in this article. Error bars and boxes represent statistical and systematic uncertainties, respectively.