<p>Whether or not you have preloaded an ISAPI extension, all
ISAPI extensions are governed by the same permissions and
restrictions as CGI scripts. That is, <code class="directive"><a href="../mod/core.html#options">Options</a></code> <code>ExecCGI</code> must be set for the
directory that contains the ISAPI .dll file.</p>
<p>Review the <a href="#notes">Additional Notes</a> and the <a href="#journal">Programmer's Journal</a> for additional details
and clarification of the specific ISAPI support offered by
<li>in the error log with the <code class="directive"><a href="#isapiappendlogtoerrors">ISAPIAppendLogToErrors</a></code> <code>On</code> directive</li>
</ul>
<p>The first option, the <code>%{isapi-parameter}n</code> component,
is always available and preferred.</p>
</dd>
<dt><code>HSE_REQ_IS_KEEP_CONN</code></dt>
<dd>Will return the negotiated Keep-Alive status.</dd>
<p>Record <code>HSE_APPEND_LOG_PARAMETER</code> requests from ISAPI
extensions to the query field (appended to the <code class="directive"><a href="../mod/mod_log_config.html#customlog">CustomLog</a></code> <code>%q</code>