Using this flag is mostly equivalent to using the C<add-domain> command,
with C<readonly:true> if the I<--ro> flag was given, and
with C<format:...> if the I<--format:...> flag was given.
Using this flag is mostly equivalent to using the C<add-domain> command,
with C<readonly:true> if the I<--ro> flag was given, and
with C<format:...> if the I<--format:...> flag was given.