* @param fmt The format string
* @param ... The arguments to use to fill out fmt.
* @note ap_log_error is implemented as a macro
- * @note Use APLOG_MARK to fill out file and line
+ * @note Use APLOG_MARK to fill out file, line, and module_index
* @note If a request_rec is available, use that with ap_log_rerror()
* in preference to calling this function. Otherwise, if a conn_rec is
* available, use that with ap_log_cerror() in preference to calling