CMDs for stars in the field of OGLE-CL LMC 377: the observed CMD composed of the stars distributed within the cluster radius, with typical photometric errors represented with error bars at the left margin (top left-hand panel); a field CMD for a circular area equal to that of the cluster with the respective sample of produced boxes used in the cleaning procedure (top right-hand panel); the cleaned cluster CMD (bottom left). Colour-scaled symbols represent stars with membership probability of P≤ 25% (pink), P= 50% (light blue), and P≥ 75% (dark blue). Three isochrones from Bressan et al. (2012) for log(t yr^-1) = 8.1, 8.2, and 8.3 and Z = 0.006 are also superimposed. The schematic diagram centred on the cluster is shown in the bottom right-hand panel. The black circle represents the adopted cluster radius. Symbols are as in the bottom left-hand panel, with sizes proportional to the stellar brightnesses. North is up; east is to the left. The actual images are shown in Fig. A.1.