mp>--quotestr=&quot;<var>regex</var>&quot;</samp></dt>
<dd><p>Set the regular expression for matching the quoting part of a line.
The default value is &quot;<tt>^([&nbsp;<!-- /@w -->\t]*([!#%:;&gt;|}]|//))+</tt>&quot;.
(Note that <code>\t</code> stands for a literal Tab character.)
This makes it possible to rejustify blocks of quoted text when composing
email, and to rewrap blocks of line comments when writing source code.
</p>
</dd>
<dt><samp>-R</samp></dt>
<dt><samp>--restricted</samp></dt>
<dd><p>Restric