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<h3 class="section">14.4 <code>@deffnx</code>, et al.: Two or More &lsquo;First&rsquo; Lines</h3>

To create two or more &lsquo;first&rsquo; or header lines for a definition, follow
the first <code>@deffn</code> line by a line beginning with
<code>@deffnx</code>. The <code>@deffnx</code> command works exactly like
<code>@deffn</code> except that it does not generate extra vertical white
space between it and the preceding line.

For example,

<div class="example">
<pre class="example">@deffn {Interactive Command} isearch-forward
@deffnx {Interactive Command} isearch-backward
These two search commands are similar except &hellip;
@end deffn
</pre></div>

produces

<dl>
<dt id="index-isearch_002dforward">Interactive Command: isearch-forward</dt>
<dt id="index-isearch_002dbackward">Interactive Command: isearch-backward</dt>
<dd>These two search commands are similar except &hellip;
</dd></dl>

Each definition command has an &lsquo;x&rsquo; form: <code>@defunx</code>,
<code>@defvrx</code>, <code>@deftypefunx</code>, etc.

The &lsquo;x&rsquo; forms work similarly to <code>@itemx</code>
(see <a href="_0040itemx.html"><code>@itemx</code></a>).

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