BaseField -- the field of a code

i1 : C = linearCode(GF(8,Variable => b), {{1,0,b,0,0},{0,b,b+1,1,0},{1,1,1,b,0}})

                                       5
o1 = LinearCode{AmbientModule => (GF 8)                                              }
                BaseField => GF 8
                cache => CacheTable{}
                Code => image | 1 0   1 |
                              | 0 b   1 |
                              | b b+1 1 |
                              | 0 1   b |
                              | 0 0   0 |
                GeneratorMatrix => | 1 0 b   0 0 |
                                   | 0 b b+1 1 0 |
                                   | 1 1 1   b 0 |
                Generators => {{1, 0, b, 0, 0}, {0, b, b + 1, 1, 0}, {1, 1, 1, b, 0}}
                ParityCheckMatrix => | 1 b2+1 b2+1 b2+1 0 |
                                     | 0 0    0    0    1 |
                                         2       2       2
                ParityCheckRows => {{1, b  + 1, b  + 1, b  + 1, 0}, {0, 0, 0, 0, 1}}

o1 : LinearCode

i2 : C.BaseField

o2 = GF 8

o2 : GaloisField