WordLength( C )
WordLength returns the parameter n of C, the word length of the
elements. Elements of cyclic codes are polynomials of maximum degree
n-1, as calculations are carried out modulo x^{n}-1.
gap> WordLength( NordstromRobinsonCode() );
16
gap> WordLength( PuncturedCode( WholeSpaceCode(7) ) );
6
gap> WordLength( UUVCode( WholeSpaceCode(7), RepetitionCode(7) ) );
14
GAP 3.4.4