| %>>% | The lumberjack operator | 
| %L>% | The lumberjack operator | 
| cellwise | The cellwise logger. | 
| dump_log | Dump logging data | 
| expression_logger | The expression logger. | 
| filedump | The file dumping logger. | 
| get_log | Get log object from a data item | 
| lumberjack | Track changes in data | 
| no_log | The nop logger | 
| run_file | Run a file while tracking changes in data | 
| simple | The simple logger | 
| source_file | Run a file while tracking changes in data | 
| start_log | Start tracking an R object | 
| stop_log | Stop logging |