l#ascender">ascender</a>
to the bottom edge of the rule.)  A unit of measure is required, and
decimal fractions are allowed.  Please note that HEADER_RULE_GAP has
no effect on
<a href="#hdrftr-gap">HEADER_GAP</a>
(i.e., HEADER_RULE_GAP is NOT added to HEADER_GAP when mom calculates
the space between headers and the start of
<a href="definitions.html#running">running text</a>).
</p>

<p>
By default, the header rule gap is 4
<a href="definitions.html#picaspoints">points</a>.
If you&#8217;d like to change it t