| %>% | re-export magrittr pipe operator |
| Crossword | Crossword |
| cw_greplv | a vectorized version of grep |
| cw_matrix_to_df | function that turn matrix into a data.frame in long format |
| cw_normalize_words | normalize words to be added to grid |
| cw_to_json | function implementing to_json method |
| cw_wordlist_animal_en | en - animals |