Different star formation variants of the model GDw1e8. The values of the star formation parameters are stated in Appendix D. From top to bottom, the panels show: (1) Evolution of the distance of the GC from the stellar barycenter of the galaxy projected to the disk plane, R_xy, in the units of kiloparsecs. (2) Same but in the units of stellar half-mass radius. (3) Evolution of the stellar half-mass radius, R₅₀. (4) Evolution of the star formation rate. In the legend, we indicate just the suffix of the variant of the model indicated in the title of the plot (see the tables in Appendix D).