We provide an effective ramification theorem for the ratio of canonical forms
of a weakly complete flat front in the hyperbolic three-space. Moreover we give
the two applications of this theorem, the first one is to show an analogue of
the Ahlfors islands theorem for it and the second one is to give a simple proof
of the classification of complete nonsingular flat surfaces in the hyperbolic
three-space.Comment: 11 pages, no figure, to appear in Geometriae Dedicata. arXiv admin
note: substantial text overlap with arXiv:1004.148