| lex | Build a lexer |
| Lexer | Lexing Engine |
| LexToken | Lex Token |
| LRParser | The LR Parsing engine |
| NullLogger | Null logger is used when no output should be generated. |
| RlyLogger | Print log message to file or console. |
| yacc | Build a parser |
| YaccProduction | Object sent to grammar rule |