All stars within the four annuli selected by proper motion are plotted in the sequence a–d, with a being the inner annulus. The top section of each plot is the proper‐motion selection, with the units being relative motion in HST pixels (0﹩\farcs﹩1) over the 6 yr time baseline. The densest and most concentrated clump consists of the M4 stars and their CMD is illustrated in the left‐hand panels. The right‐hand sequence is largely due to stars in the inner halo of the Galaxy. The cluster main sequence is the reddest of the sequences observed in these plots, the cluster white dwarfs are the bluest sequence.