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					 在跟下index.php下有这么一段:
 print_container_start();
/// Print Section
 if ($SITE->numsections > 0) {
 if (!$section = get_record('course_sections', 'course', $SITE->id, 'section', 1)) {
 delete_records('course_sections', 'course', $SITE->id, 'section', 1); // Just in case
 $section->course = $SITE->id;
 $section->section = 1;
 $section->summary = '';
 $section->sequence = '';
 $section->visible = 1;
 $section->id = insert_record('course_sections', $section);
 }
 if (!empty($section->sequence) or !empty($section->summary) or $editing) {
 print_box_start('generalbox sitetopic');
 /// If currently moving a file then show the current clipboard
 if (ismoving($SITE->id)) {
 $stractivityclipboard = strip_tags(get_string('activityclipboard', '', addslashes($USER->activitycopyname)));
 echo '';
 echo "$stractivityclipboard (sesskey">". get_string('cancel') .')';
 echo '
';
 }
 $options = NULL;
 $options->noclean = true;
 echo format_text($section->summary, FORMAT_HTML, $options);
 if ($editing) {
 $streditsummary = get_string('editsummary');
 echo " " href="course/editsection.php?id=$section->id"> " class="iconsmall" alt="$streditsummary" />
 
";
 }
 get_all_mods($SITE->id, $mods, $modnames, $modnamesplural, $modnamesused);
 print_section($SITE, $section, $mods, $modnamesused, true);
 if ($editing) {
 print_section_add_menus($SITE, $section->section, $modnames);
 }
 print_box_end();
 }
 }
 if (isloggedin() and !isguest() and isset($CFG->frontpageloggedin)) {
 $frontpagelayout = $CFG->frontpageloggedin;
 } else {
 $frontpagelayout = $CFG->frontpage;
 }
 foreach (explode(',',$frontpagelayout) as $v) {
 switch ($v) { /// Display the main part of the front page.
 //下面是显示“本站新闻”
 case FRONTPAGENEWS:
 if ($SITE->newsitems) { // Print forums only when needed
 require_once($CFG->dirroot .'/mod/forum/lib.php');
 if (! $newsforum = forum_get_course_forum($SITE->id, 'news')) {
 error('Could not find or create a main news forum for the site');
 }
 if (!empty($USER->id)) {
 $SESSION->fromdiscussion = $CFG->wwwroot;
 $subtext = '';
 if (forum_is_subscribed($USER->id, $newsforum)) {
 if (!forum_is_forcesubscribed($newsforum)) {
 $subtext = get_string('unsubscribe', 'forum');
 }
 } else {
 $subtext = get_string('subscribe', 'forum');
 }
 print_heading_block($newsforum->name);
 echo 'id.'">'.$subtext.'
';
 } else {
 print_heading_block($newsforum->name);
 }
 forum_print_latest_discussions($SITE, $newsforum, $SITE->newsitems, 'header', 'p.modified DESC');
 }
 break
;//这句是显示首页的“本站新闻”的
 
 //从这里开始显示“课程分类及课程名称”的
 case FRONTPAGECOURSELIST:
 
 if (isloggedin() and !has_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM)) and !isguest() and empty($CFG->disablemycourses)) {
 print_heading_block(get_string('mycourses'));
 print_my_moodle();
 } else if ((!has_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM)) and !isguest()) or (count_records('course') | |
 
							
 
				