%>>%                    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
start_log               Start tracking an R object
stop_log                Stop logging
