ff.
</p>

<p>
The macro
<a href="#UNDERLINE">UNDERLINE</a>
and the inline escape <kbd>\*[UL]</kbd> are functionally
identical, hence

<pre>
    .FAM     C
    .FT      R
    .PT_SIZE 12
    .LS      24
    .SS      0
    .QUAD    LEFT
    Which should I heed?
    .UNDERLINE
    Just do it
    .UNDERLINE OFF
    or
    .UNDERLINE
    just say no?
    .UNDERLINE OFF
</pre>

produces the same result as

<pre>
    .FAM     C
    .FT      R
    .PT_SIZE 12
    .LS      24
    .SS      0
    .QUAD    LEFT
    Whi