Binary fraction in different environments. The plot compares the core binary fraction for clusters belonging to different environments. Galactic GCs, Galactic open clusters, and the Magellanic Clouds globular clusters studied in this paper are denoted in lime green, magenta, and violet, respectively. Binary fractions in these clusters are explored as a function of mass (left panel), age (middle panel), and dynamical age (right panel) on a logarithmic scale.