 command should be on a
separate line, and all commands should be written in lowercase.
</p>
<p>Options that do not take an argument are unset by default.  So using
the <code>unset</code> command is only needed when wanting to override a
setting from the system&rsquo;s nanorc file in your own nanorc.  Options that
take an argument cannot be unset, but can be assigned the empty string.
</p>
<p>Any command-line option overrides its nanorc setting, of course.
</p>
<p>Quotes inside the <var>characters</var> par