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tokens: This completes the presentation of the Galaxy model potential. Appendix C Implementation Notes In this section, we sketch a brief technical resume of the GalMod platform contents (ver. 16.2). Nevertheless, we warn the reader that the platform “GalMod” is continuously updated and the Web page (the tutorial page: www.galmod.org/gal/tutorial ) is the most up-to-date place to search for the latest refinements, bug corrections, and tested implementations that might differ from what is presented in this section. A cycle of 12 upgrades per year is planned. We organized GalMod in modules, i.e., independent sub-units of the source code that interact through interfaces (e.g., the Poisson solver modules, the CMD generator modules, the extinction integrator modules, and so forth). This approach facilitates the use of multiple language codes/libraries with different types of licenses. A rough scheme of the GalMod infrastructure is shown in Figure 17 . We presented each of these modules in dedicated papers. The technique to generate the photometry and chemistry of the stars is introduced in Pasetto et al. ( 2012b ) and references therein, the kinematics and potential solver in Pasetto et al. ( 2016b ) and references therein, and the extinction based on DART-Ray in Natale et al. ( 2017a ). The Web-interface system and cloud computing service is realized and maintained by Clover-lab TM . These references collect the results of several years of work performed by several researchers and programmers. They are not meant to be an exhaustive list. Figure 17. The superstructure of GalMod. Each square box represents a series of modules of GalMod where some computation is performed (either in serial or parallel mode). The numbered blue arrows represent the ideal flux from the input parameters to the delivery of the mock catalog (or the output) . The modules are the Poisson-solver modules that, once the density/potential parameters have been adopted, provide Φ, its gradients and Laplacian, and a series of kinematics indicators (rotation curve, total mass, etc.) relative to . are the modules computing the maximum number of stars for the galaxy considering and the input parameters . can be simply an input parameter depending on the type of simulation. M are the modules assigning the star-like particle mass in the case GalMod is used to generate N -body i.c.. N is the number of stars generated so far. are the modules distributing the stars according to the density profiles, , their number N , and the input condition . The age/metallicity/velocity dispersion modules compute the distribution of the stars or star-like particles in the age τ , metallicity Z , and velocity space. They include the mass generation of the star and the extinction modules in the case of mock stellar catalogs only, while a separate module provides the same information with a preassigned stellar particle mass in the case of i.c. generation. GalMod produces a stochastic realization (i.e., stellar