diff --git a/main/course_description/ajax_controller.class.php b/main/course_description/ajax_controller.class.php
index bdd586c4cf..38fb17e197 100644
--- a/main/course_description/ajax_controller.class.php
+++ b/main/course_description/ajax_controller.class.php
@@ -1,4 +1,12 @@
 <?php
+/* For licensing terms, see /license.txt */
+/**
+ * Course description's ajax controller class definition
+ * @package chamilo.course_description
+ */
+/**
+ * Init
+ */
 
 namespace CourseDescription;
 
diff --git a/main/course_description/course_description_form.class.php b/main/course_description/course_description_form.class.php
index e44667a945..e044f36df5 100644
--- a/main/course_description/course_description_form.class.php
+++ b/main/course_description/course_description_form.class.php
@@ -1,4 +1,12 @@
 <?php
+/* For licensing terms, see /license.txt */
+/**
+ * Course description's form class definition
+ * @package chamilo.course_description
+ */
+/**
+ * Init
+ */
 
 namespace CourseDescription;
 
@@ -95,4 +103,4 @@ class CourseDescriptionForm extends \FormValidator
         return $result;
     }
 
-}
\ No newline at end of file
+}
diff --git a/main/course_description/course_description_repository.class.php b/main/course_description/course_description_repository.class.php
index 9417fdda76..e8a95db602 100644
--- a/main/course_description/course_description_repository.class.php
+++ b/main/course_description/course_description_repository.class.php
@@ -1,4 +1,12 @@
 <?php
+/* For licensing terms, see /license.txt */
+/**
+ * Course description repository class definition
+ * @package chamilo.course_description
+ */
+/**
+ * Init
+ */
 
 namespace CourseDescription;
 
@@ -263,4 +271,4 @@ class CourseDescriptionRepository
         return $result;
     }
 
-}
\ No newline at end of file
+}
diff --git a/main/course_description/course_description_type.class.php b/main/course_description/course_description_type.class.php
index ba7fcc9fcf..7e595bd290 100644
--- a/main/course_description/course_description_type.class.php
+++ b/main/course_description/course_description_type.class.php
@@ -1,5 +1,12 @@
 <?php
-
+/* For licensing terms, see /license.txt */
+/**
+ * CourseDescriptionType class definition
+ * @package chamilo.course_description
+ */
+/**
+ * Init
+ */
 namespace CourseDescription;
 
 /**
diff --git a/main/course_description/course_description_type_repository.class.php b/main/course_description/course_description_type_repository.class.php
index 79a789fdf0..5b7f2222b8 100644
--- a/main/course_description/course_description_type_repository.class.php
+++ b/main/course_description/course_description_type_repository.class.php
@@ -1,4 +1,12 @@
 <?php
+/* For licensing terms, see /license.txt */
+/**
+ * CourseDescriptionTypeRepository class definition
+ * @package chamilo.course_description
+ */
+/**
+ * Init
+ */
 
 namespace CourseDescription;
 
@@ -163,4 +171,4 @@ class CourseDescriptionTypeRepository
         return self::find_one_by_id($id);
     }
 
-}
\ No newline at end of file
+}
diff --git a/main/course_description/course_import.class.php b/main/course_description/course_import.class.php
index 5054e9dfab..ecbf6d3347 100644
--- a/main/course_description/course_import.class.php
+++ b/main/course_description/course_import.class.php
@@ -1,4 +1,12 @@
 <?php
+/* For licensing terms, see /license.txt */
+/**
+ * Course description import class definition
+ * @package chamilo.course_description
+ */
+/**
+ * Init
+ */
 
 namespace CourseDescription;
 
@@ -85,4 +93,4 @@ class CourseImport
         return $link;
     }
 
-}
\ No newline at end of file
+}
diff --git a/main/course_description/csv_reader.class.php b/main/course_description/csv_reader.class.php
index 195033b528..03e7e88fef 100644
--- a/main/course_description/csv_reader.class.php
+++ b/main/course_description/csv_reader.class.php
@@ -1,4 +1,12 @@
 <?php
+/* For licensing terms, see /license.txt */
+/**
+ * Course description's CSV reader class definition
+ * @package chamilo.course_description
+ */
+/**
+ * Init
+ */
 
 namespace CourseDescription;
 
@@ -103,4 +111,4 @@ class CsvReader implements \Iterator
         return count($items) > $this->index;
     }
 
-}
\ No newline at end of file
+}
diff --git a/main/course_description/csv_writer.class.php b/main/course_description/csv_writer.class.php
index 6d5e99f868..38bb17ad34 100644
--- a/main/course_description/csv_writer.class.php
+++ b/main/course_description/csv_writer.class.php
@@ -1,4 +1,12 @@
 <?php
+/* For licensing terms, see /license.txt */
+/**
+ * CSV writer class definition
+ * @package chamilo.course_description
+ */
+/**
+ * Init
+ */
 
 namespace CourseDescription;
 
@@ -100,4 +108,4 @@ class CsvWriter
         $writer->put($data);
     }
 
-}
\ No newline at end of file
+}
diff --git a/main/course_description/request.class.php b/main/course_description/request.class.php
index 6a8430c585..ef16491bba 100644
--- a/main/course_description/request.class.php
+++ b/main/course_description/request.class.php
@@ -1,4 +1,12 @@
 <?php
+/* For licensing terms, see /license.txt */
+/**
+ * Course description's request class definition
+ * @package chamilo.course_description
+ */
+/**
+ * Init
+ */
 
 namespace CourseDescription;
 
@@ -121,4 +129,4 @@ class Request extends \Request
         return $result;
     }
 
-}
\ No newline at end of file
+}
diff --git a/main/course_description/upload_file_form.class.php b/main/course_description/upload_file_form.class.php
index 84c3d6ecd0..63cc3fb25f 100644
--- a/main/course_description/upload_file_form.class.php
+++ b/main/course_description/upload_file_form.class.php
@@ -1,4 +1,12 @@
 <?php
+/* For licensing terms, see /license.txt */
+/**
+ * Course description's upload file form class definition
+ * @package chamilo.course_description
+ */
+/**
+ * Init
+ */
 
 namespace CourseDescription;
 
@@ -76,4 +84,4 @@ class UploadFileForm extends \FormValidator
         return true;
     }
 
-}
\ No newline at end of file
+}