@ <p><b>Exceptions to anti-robot restrictions</b><br>
  @ The entry below is a list of regular expressions, one per line.
  @ If any of these regular expressions match the input URL, then the
  @ request is exempt from anti-robot defenses.  Use this, for example,
  @ to allow scripts to download release tarballs using a pattern
  @ like:</p>
  @ <p>
  @ &emsp;&emsp;<tt>^/tarball\\b*\\b(version-|release)\\b</tt>
  @ <p>The pattern should match against the REQUEST_URI with the
  @ SCRIPT_NAME prefix removed, and with QUERY_STRING appended following
  @ a "?" if QUERY_STRING exists.  (Property: robot-exception)<br>
  textarea_attribute("", 3, 80,
      "robot-exception", "rbexcept", "", 0);

  @ <hr>