<p>Here, the functors <tt>fa</tt>, <tt>fb</tt> and <tt>fc</tt> all expect the
signature <tt>void operator()(unsigned n) const</tt>.</p>
<h2>Directives and Actions</h2>
-<p>Directives inherit the the function/functor interface of the subject it is
+<p>Directives inherit the function/functor interface of the subject it is
enclosing. Example:</p>
<pre><code><font color="#000000"><span class=special> </span><span class=identifier>as_lower_d</span><span class=special>[</span><span class=identifier>ch_p</span><span class=special>(</span><span class=literal>'x'</span><span class=special>)][</span><span class=identifier>f</span><span class=special>]</span></font></code></pre>
<p>Here, the functor <tt>f</tt> expects the signature <tt>void operator()(char