* Fix wrong Voyager polynomials. The binary and decimal representation which must be passed as an argument to the block, however, is correct. * Clarify how the generator polynomials are to be represented. Add the important note that an uncommonly used representation is required. * Mention that start_state must be possibly reversed and that start_state is used to flush the encoder in terminated mode. * Mention support for inversion of the output of a generator polynomial. * Improve description of tailbiting and terminated mode. * Mention valid values for parameters.