init_glob() := (
    c_v : 2.99792458e8,      /* speed of light in meters/sec */
    h_v : 6.62606876e-34,    /* Plank's constant in kg meters^2/sec */
    me_v : 9.10938188e-31,   /* mass of electron in kg */
    print("c_v = ", c_v),
    print("h_v = ",h_v),
    print("me_v = ",me_v)
);