| as_factor | Factors of fewer than 256 elements | 
| count_by256 | Aggregating helpers | 
| deinterlace256 | Interlace raw vectors | 
| deinterlace256_columns | Interlace raw vectors | 
| factor256 | Factors of fewer than 256 elements | 
| factor256_ein | Factors of fewer than 256 elements | 
| factor256_enotin | Factors of fewer than 256 elements | 
| factor256_in | Factors of fewer than 256 elements | 
| factor256_notin | Factors of fewer than 256 elements | 
| interlace256 | Interlace raw vectors | 
| interlace256_columns | Interlace raw vectors | 
| is.factor256 | Factors of fewer than 256 elements | 
| isntSorted256 | Factors of fewer than 256 elements | 
| levels.factor256 | Factors of fewer than 256 elements | 
| order256 | Factors of fewer than 256 elements | 
| rank256 | Factors of fewer than 256 elements | 
| recompose256 | Factors of fewer than 256 elements | 
| relevel256 | Factors of fewer than 256 elements | 
| setkeyv256 | 'setkey' for raw columns | 
| tabulate256 | Factors of fewer than 256 elements | 
| tabulate256_levels | Factors of fewer than 256 elements | 
| unique256 | Factors of fewer than 256 elements |