请教这段代码含义
xmvb 2006-04-12 03:28:20 <td valign="top" class="tdfunc"><jsp:useBean id="sysLink" scope="request" class="oapage.oacls_SysModules" />
<%
String LinkStr="";
sysLink.setUserName(userName);
sysLink.AddFunctionBySystemName("常用链接");
LinkStr = sysLink.getValidFunctionsPageHtml();
%>
<%=LinkStr%></td>