r>number</var> must be greater than 0.  The default value is <tt>8</tt>.
</p>
</dd>
<dt><samp>-U</samp></dt>
<dt><samp>--quickblank</samp></dt>
<dd><p>Make status-bar messages disappear after 1 keystroke instead of after 20.
Note that option <samp>-c</samp> (<samp>--constantshow</samp>) overrides this.
When option <samp>--minibar</samp> or <samp>--zero</samp> is in effect,
<samp>--quickblank</samp> makes a message disappear after
0.8 seconds instead of after the default 1.5 seconds.
</p>
</dd>
<dt><samp>-V<