protected void navLinkHelp() {
        String helpfilenm = configuration.helpfile;
        if (helpfilenm.equals("")) {
            helpfilenm = "help-doc.html";
        } else {
            int lastsep;
            if ((lastsep = helpfilenm.lastIndexOf(File.separatorChar)) != -1) {
                helpfilenm = helpfilenm.substring(lastsep + 1);
            }
        }
        navCellStart();
        printHyperLink(relativePath + helpfilenm, "",
                       configuration.getText("doclet.Help"), true, "NavBarFont1");
        navCellEnd();
    }