Constants used throughout the program are defined in enumerations in the
tt(enums/enums.h) file. These enumerations are:
    itemization(
    itt(Constants), defining the number of bi-rad categories (tt(N_BIRADS
        = 4)) and the ending and maximum ages for simulated cases (tt(END_AGE
        = 101, MAX_AGE = END_AGE - 1));

    itt(DistType), defining the types of the distributions used when
        generating random values. All classes using distributions (like
        tt(Distribution) and tt(Random)) use this enumeration when referring
        to statistical distributions.

    itt(GeneratorType), defining the diffent ways the random number
        generators can be initialized (cf. the tt(generator:) parameter in the
        configuration file);

    itt(ParamsSrc), specifying whether parameters are defined in a
        configuration file or in an tt(analysis:) specification section.
    )

