  The currently favored model of CP violation is based on phases in the
Cabibbo-Kobayashi-Maskawa (CKM) matrix describing the weak charge-changing
couplings of quarks. The present status of parameters of this matrix is
described. Tests of the theory, with particular emphasis on the study of B
meson decays, are then noted. Some remarks are made regarding the possible
origin of the baryon asymmetry of the universe; the corresponding coupling
pattern of the leptons could shed light on the question. Some possibilities for
non-standard physics are discussed.
