mpty string at the end of the string.  The behaviour of both anchors
can be varied by specifying certain execution and compilation flags;
see the <a href="api.html">API manual</a>.
</p>

<p>
An assertion-character can be any of the following:
</p>

<ul>
<li><tt>&lt;</tt> - Beginning of word
<li><tt>&gt;</tt> - End of word
<li><tt>b</tt> - Word boundary
<li><tt>B</tt> - Non-word boundary
<li><tt>d</tt> - Digit character (equivalent to <tt>[[:digit:]]</tt>)</li>
<li><tt>D</tt> - Non-digit character (equivalen