  Should you wish to design your own
headers from the ground up without worrying how changes to the
various elements of header style interact with mom&#8217;s defaults,
invoke <kbd>.HEADER_PLAIN</kbd> by itself, with no argument. Mom
will disable her default behaviour for headers, and reset all
elements of header style to the same family, font, point size and
colour as she uses in paragraphs.
</p>

<p>
Replace HEADER_, above, with FOOTER_ to disable mom&#8217;s default
behaviour for the various elements of 