The reset command causes all options that can be set with the set
command to take on their default values. The only exceptions are that the
terminal set with set term and the output file set with set output are
left unchanged. This command is useful, e.g., to restore the default
settings at the end of a command file, or to return to a defined state after
lots of settings have been changed within a command file. Please refer to
the set command to see the default values that the various options take.