diff -u b/core/modules/dblog/dblog.admin.inc b/core/modules/dblog/dblog.admin.inc
--- b/core/modules/dblog/dblog.admin.inc
+++ b/core/modules/dblog/dblog.admin.inc
@@ -2,11 +2,11 @@
 
 /**
  * @file
- * Administrative page callbacks for the dblog module.
+ * Administrative page callbacks for the Database Logging module.
  */
 
 /**
- * Page callback: Displays a listing of dblog messages.
+ * Page callback: Displays a listing of database log messages.
  *
  * Messages are truncated at 56 chars. Full-length message can be viewed in
  * their entirity on the message details page (admin/reports/event/%).
@@ -374,8 +374,6 @@
 /**
  * Form constructor for the dblog clear log form.
  *
- * This form allows the user to clear the dblog table of event messages.
- *
  * @see dblog_clear_log_submit()
  * @ingroup forms
  */
@@ -396,7 +394,7 @@
 }
 
 /**
- * Submission handler for dblog_clear_log_form().
+ * Form submission handler for dblog_clear_log_form().
  */
 function dblog_clear_log_submit() {
   $_SESSION['dblog_overview_filter'] = array();
diff -u b/core/modules/dblog/dblog.test b/core/modules/dblog/dblog.test
--- b/core/modules/dblog/dblog.test
+++ b/core/modules/dblog/dblog.test
@@ -61,16 +61,16 @@
    *   The row limit.
    */
   private function verifyRowLimit($row_limit) {
-    // Change the dblog row limit.
+    // Change the database log row limit.
     $edit = array();
     $edit['dblog_row_limit'] = $row_limit;
     $this->drupalPost('admin/config/development/logging', $edit, t('Save configuration'));
     $this->assertResponse(200);
 
-    // Check row limit variable.
+    // Check the row limit variable.
     $current_limit = variable_get('dblog_row_limit', 1000);
     $this->assertTrue($current_limit == $row_limit, t('[Cache] Row limit variable of @count equals row limit of @limit', array('@count' => $current_limit, '@limit' => $row_limit)));
-    // Verify dblog row limit equals specified row limit.
+    // Verify that the database log row limit equals the specified row limit.
     $current_limit = unserialize(db_query("SELECT value FROM {variable} WHERE name = :dblog_limit", array(':dblog_limit' => 'dblog_row_limit'))->fetchField());
     $this->assertTrue($current_limit == $row_limit, t('[Variable table] Row limit variable of @count equals row limit of @limit', array('@count' => $current_limit, '@limit' => $row_limit)));
   }
@@ -84,14 +84,14 @@
   private function verifyCron($row_limit) {
     // Generate additional log entries.
     $this->generateLogEntries($row_limit + 10);
-    // Verify dblog row count exceeds row limit.
+    // Verify that the database log row count exceeds the row limit.
     $count = db_query('SELECT COUNT(wid) FROM {watchdog}')->fetchField();
     $this->assertTrue($count > $row_limit, t('Dblog row count of @count exceeds row limit of @limit', array('@count' => $count, '@limit' => $row_limit)));
 
-    // Run cron job.
+    // Run a cron job.
     $this->cronRun();
-    // Verify dblog row count equals row limit plus one because cron adds a
-    // record after it runs.
+    // Verify that the database log row count equals the row limit plus one
+    // because cron adds a record after it runs.
     $count = db_query('SELECT COUNT(wid) FROM {watchdog}')->fetchField();
     $this->assertTrue($count == $row_limit + 1, t('Dblog row count of @count equals row limit of @limit plus one', array('@count' => $count, '@limit' => $row_limit)));
   }
@@ -131,7 +131,7 @@
   }
 
   /**
-   * Verifies logged in user has desired access to various database log nodes.
+   * Confirms that database log reports are displayed at the correct paths.
    *
    * @param int $response
    *   HTTP response code.
@@ -139,35 +139,35 @@
   private function verifyReports($response = 200) {
     $quote = ''';
 
-    // View dblog help node.
+    // View the database log help page.
     $this->drupalGet('admin/help/dblog');
     $this->assertResponse($response);
     if ($response == 200) {
       $this->assertText(t('Database Logging'), t('DBLog help was displayed'));
     }
 
-    // View dblog report node.
+    // View the database log report page.
     $this->drupalGet('admin/reports/dblog');
     $this->assertResponse($response);
     if ($response == 200) {
       $this->assertText(t('Recent log messages'), t('DBLog report was displayed'));
     }
 
-    // View dblog page-not-found report node.
+    // View the database log page-not-found report page.
     $this->drupalGet('admin/reports/page-not-found');
     $this->assertResponse($response);
     if ($response == 200) {
       $this->assertText(t('Top ' . $quote . 'page not found' . $quote . ' errors'), t('DBLog page-not-found report was displayed'));
     }
 
-    // View dblog access-denied report node.
+    // View the database log access-denied report page.
     $this->drupalGet('admin/reports/access-denied');
     $this->assertResponse($response);
     if ($response == 200) {
       $this->assertText(t('Top ' . $quote . 'access denied' . $quote . ' errors'), t('DBLog access-denied report was displayed'));
     }
 
-    // View dblog event node.
+    // View the database log event page.
     $this->drupalGet('admin/reports/event/1');
     $this->assertResponse($response);
     if ($response == 200) {
@@ -197,8 +197,8 @@
     // Set user variables.
     $name = $this->randomName();
     $pass = user_password();
-    // Add user using form to generate add user event (which is not triggered by
-    // drupalCreateUser).
+    // Add a user using the form to generate an add user event (which is not
+    // triggered by drupalCreateUser).
     $edit = array();
     $edit['name'] = $name;
     $edit['mail'] = $name . '@example.com';
@@ -207,7 +207,7 @@
     $edit['status'] = 1;
     $this->drupalPost('admin/people/create', $edit, t('Create new account'));
     $this->assertResponse(200);
-    // Retrieve user object.
+    // Retrieve the user object.
     $user = user_load_by_name($name);
     $this->assertTrue($user != NULL, t('User @name was loaded', array('@name' => $name)));
     // pass_raw property is needed by drupalLogin.
@@ -216,7 +216,7 @@
     $this->drupalLogin($user);
     // Logout user.
     $this->drupalLogout();
-    // Fetch row ids in watchdog that relate to the user.
+    // Fetch the row ids in watchdog that relate to the user.
     $result = db_query('SELECT wid FROM {watchdog} WHERE uid = :uid', array(':uid' => $user->uid));
     foreach ($result as $row) {
       $ids[] = $row->wid;
@@ -226,11 +226,11 @@
 
     // Login the admin user.
     $this->drupalLogin($this->big_user);
-    // Delete user created at start of this test.
+    // Delete the user created at the start of this test.
     // We need to POST here to invoke batch_process() in the internal browser.
     $this->drupalPost('user/' . $user->uid . '/cancel', array('user_cancel_method' => 'user_cancel_reassign'), t('Cancel account'));
 
-    // View the dblog report.
+    // View the database log report.
     $this->drupalGet('admin/reports/dblog');
     $this->assertResponse(200);
 
@@ -246,7 +246,7 @@
     // Delete user.
     $message = t('Deleted user: %name %email.', array('%name' => $name, '%email' => '<' . $user->mail . '>'));
     $message_text = truncate_utf8(filter_xss($message, array()), 56, TRUE, TRUE);
-    // Verify full message on details page.
+    // Verify that the full message displays on the details page.
     $link = FALSE;
     if ($links = $this->xpath('//a[text()="' . html_entity_decode($message_text) . '"]')) {
       // Found link with the message text.
@@ -267,7 +267,7 @@
     $not_found_url = $this->randomName(60);
     $this->drupalGet($not_found_url);
     $this->assertResponse(404);
-    // View dblog page-not-found report page.
+    // View the database log page-not-found report page.
     $this->drupalGet('admin/reports/page-not-found');
     $this->assertResponse(200);
     // Check that full-length url displayed.
@@ -287,37 +287,37 @@
     // Login user.
     $this->drupalLogin($user);
 
-    // Create node using form to generate add content event (which is not
-    // triggered by drupalCreateNode).
+    // Create a node using the form in order to generate an add content event
+    // (which is not triggered by drupalCreateNode).
     $edit = $this->getContent($type);
     $langcode = LANGUAGE_NOT_SPECIFIED;
     $title = $edit["title"];
     $this->drupalPost('node/add/' . $type, $edit, t('Save'));
     $this->assertResponse(200);
-    // Retrieve node object.
+    // Retrieve the node object.
     $node = $this->drupalGetNodeByTitle($title);
     $this->assertTrue($node != NULL, t('Node @title was loaded', array('@title' => $title)));
-    // Edit node.
+    // Edit the node.
     $edit = $this->getContentUpdate($type);
     $this->drupalPost('node/' . $node->nid . '/edit', $edit, t('Save'));
     $this->assertResponse(200);
-    // Delete node.
+    // Delete the node.
     $this->drupalPost('node/' . $node->nid . '/delete', array(), t('Delete'));
     $this->assertResponse(200);
-    // View node (to generate page not found event).
+    // View the node (to generate page not found event).
     $this->drupalGet('node/' . $node->nid);
     $this->assertResponse(404);
-    // View the dblog report (to generate access denied event).
+    // View the database log report (to generate access denied event).
     $this->drupalGet('admin/reports/dblog');
     $this->assertResponse(403);
 
     // Login the admin user.
     $this->drupalLogin($this->big_user);
-    // View the dblog report.
+    // View the database log report.
     $this->drupalGet('admin/reports/dblog');
     $this->assertResponse(200);
 
-    // Verify node events were recorded.
+    // Verify that node events were recorded.
     // Was node content added?
     $this->assertLogMessage(t('@type: added %title.', array('@type' => $type, '%title' => $title)), t('DBLog event was recorded: [content added]'));
     // Was node content updated?
@@ -325,16 +325,16 @@
     // Was node content deleted?
     $this->assertLogMessage(t('@type: deleted %title.', array('@type' => $type, '%title' => $title)), t('DBLog event was recorded: [content deleted]'));
 
-    // View dblog access-denied report node.
+    // View the database log access-denied report page.
     $this->drupalGet('admin/reports/access-denied');
     $this->assertResponse(200);
-    // Verify 'access denied' event was recorded.
+    // Verify that the 'access denied' event was recorded.
     $this->assertText(t('admin/reports/dblog'), t('DBLog event was recorded: [access denied]'));
 
-    // View dblog page-not-found report node.
+    // View the database log page-not-found report page.
     $this->drupalGet('admin/reports/page-not-found');
     $this->assertResponse(200);
-    // Verify 'page not found' event was recorded.
+    // Verify that the 'page not found' event was recorded.
     $this->assertText(t('node/@nid', array('@nid' => $node->nid)), t('DBLog event was recorded: [page not found]'));
   }
 
@@ -399,8 +399,8 @@
   /**
    * Tests the addition and clearing of log events through the admin interface.
    *
-   * First logs in an admin user, then creates database log event, and finally
-   * tests the clearing dblog functionality through the admin interface.
+   * Logs in the admin user, creates a database log event, and tests the
+   * functionality of clearing the database log through the admin interface.
    */
   protected function testDBLogAddAndClear() {
     global $base_root;
@@ -425,9 +425,9 @@
     $this->assertEqual($count + 1, db_query('SELECT COUNT(*) FROM {watchdog}')->fetchField(), t('dblog_watchdog() added an entry to the dblog :count', array(':count' => $count)));
     // Login the admin user.
     $this->drupalLogin($this->big_user);
-    // Now post to clear the database table.
+    // Post in order to clear the database table.
     $this->drupalPost('admin/reports/dblog', array(), t('Clear log messages'));
-    // Count rows in watchdog that previously related to the deleted user.
+    // Count the rows in watchdog that previously related to the deleted user.
     $count = db_query('SELECT COUNT(*) FROM {watchdog}')->fetchField();
     $this->assertEqual($count, 0, t('DBLog contains :count records after a clear.', array(':count' => $count)));
   }
@@ -438,7 +438,7 @@
   protected function testFilter() {
     $this->drupalLogin($this->big_user);
 
-    // Clear log to ensure that only generated entries will be found.
+    // Clear the log to ensure that only generated entries will be found.
     db_delete('watchdog')->execute();
 
     // Generate 9 random watchdog entries.
@@ -457,7 +457,7 @@
       }
     }
 
-    // View the dblog page.
+    // View the database log page.
     $this->drupalGet('admin/reports/dblog');
 
     // Confirm that all the entries are displayed.
@@ -486,8 +486,8 @@
       $this->assertEqual(array_sum($count), $type_count, 'Count matched');
     }
 
-    // Set filter to match each of the two filter-type attributes and confirm
-    // correct number of entries are displayed.
+    // Set the filter to match each of the two filter-type attributes and
+    // confirm the correct number of entries are displayed.
     foreach ($types as $key => $type) {
       $edit = array(
         'type[]' => array($type['type']),
@@ -508,11 +508,11 @@
    * Gets the database log event information from the browser page.
    *
    * @return array
-   *   List of dblog events where each event is an array with following keys:
-   *   - severity: (int) A dblog severity constant.
-   *   - type: (string) The type of dblog event.
-   *   - message: (string) The message for this dblog event.
-   *   - user: (string) The user associated with this dblog event.
+   *   List of log events where each event is an array with following keys:
+   *   - severity: (int) A database log severity constant.
+   *   - type: (string) The type of database log event.
+   *   - message: (string) The message for this database log event.
+   *   - user: (string) The user associated with this database log event.
    */
   protected function getLogEntries() {
     $entries = array();
@@ -604,8 +604,8 @@
   /**
    * Confirms that a log message appears on the database log overview screen.
    *
-   * This function should be used only for admin/reports/dblog page, because it
-   * checks for the message link text truncated to 56 characters. Other log
+   * This function should only be used for the admin/reports/dblog page, because
+   * it checks for the message link text truncated to 56 characters. Other log
    * pages have no detail links so they contain the full message text.
    *
    * @param string $log_message
only in patch2:
unchanged:
--- a/core/modules/dblog/dblog-rtl.css
+++ b/core/modules/dblog/dblog-rtl.css
@@ -1,4 +1,8 @@
 
+/**
+ * @file
+ * RTL styling for the Database Logging module.
+ */
 .form-item-type,
 .form-item-severity {
   float: right;
only in patch2:
unchanged:
--- a/core/modules/dblog/dblog.css
+++ b/core/modules/dblog/dblog.css
@@ -1,3 +1,8 @@
+
+/**
+ * @file
+ * Admin styles for the Database Logging module.
+ */
 .form-item-type,
 .form-item-severity {
   float: left; /* LTR */