diff --git a/module/report/control.php b/module/report/control.php
index 3e04caecb3..801d3e4597 100644
--- a/module/report/control.php
+++ b/module/report/control.php
@@ -11,11 +11,23 @@
  */
 class report extends control
 {
+    /**
+     * The index of report, goto project deviation.
+     * 
+     * @access public
+     * @return void
+     */
     public function index()
     {
         $this->locate(inlink('projectdeviation')); 
     }
     
+    /**
+     * Project deviation report.
+     * 
+     * @access public
+     * @return void
+     */
     public function projectDeviation()
     {
         $this->view->header->title = $this->lang->report->projectDeviation;
@@ -23,6 +35,12 @@ class report extends control
         $this->display();
     }
 
+    /**
+     * Product information report.
+     * 
+     * @access public
+     * @return void
+     */
     public function productInfo()
     {
         $this->app->loadLang('product');
@@ -33,6 +51,14 @@ class report extends control
         $this->display();
     }
 
+    /**
+     * Bug summary report.
+     * 
+     * @param  int    $begin 
+     * @param  int    $end 
+     * @access public
+     * @return void
+     */
     public function bugSummary($begin = 0, $end = 0)
     {
         $this->app->loadLang('bug');
@@ -59,6 +85,12 @@ class report extends control
         $this->display(); 
     }
 
+    /**
+     * Workload report.
+     * 
+     * @access public
+     * @return void
+     */
     public function workload()
     {
         $this->view->header->title = $this->lang->report->workload;
diff --git a/module/report/model.php b/module/report/model.php
index 1ca96ddda2..c0250e7ec9 100644
--- a/module/report/model.php
+++ b/module/report/model.php
@@ -272,6 +272,12 @@ EOT;
         return $projects;
     }
 
+    /**
+     * Get products. 
+     * 
+     * @access public
+     * @return array 
+     */
     public function getProducts()
     {
         $products    = $this->dao->select('id, code, name, PO')->from(TABLE_PRODUCT)->where('deleted')->eq(0)->fetchAll('id');
@@ -292,6 +298,14 @@ EOT;
         return $products;
     }
 
+    /**
+     * Get bugs 
+     * 
+     * @param  int    $begin 
+     * @param  int    $end 
+     * @access public
+     * @return array
+     */
     public function getBugs($begin, $end)
     {
         $bugGroups  = $this->dao->select('id, resolution, openedBy')->from(TABLE_BUG)
@@ -311,6 +325,12 @@ EOT;
         return $bugSummary; 
     }
 
+    /**
+     * Get workload. 
+     * 
+     * @access public
+     * @return array
+     */
     public function getWorkload()
     {
         $tasks = $this->dao->select('t1.*, t2.name as projectName')