n the document&#8217;s line length.
The right part (&#8220;header-right&#8221;) lines up with the
document&#8217;s right margin.  Not all parts need contain a string,
and if you don&#8217;t want headers at all, you can turn them off
completely.
</p>

<div class="box-tip">
<p class="tip">
<span class="note">Note to groff experts:</span>
Although mom&#8217;s headers resemble the three-part titles
generated by <kbd>.tl</kbd>, they&#8217;re in no way related to it,
nor based upon it. <kbd>.tl</kbd> is not used 