diff --git a/src/lib/evas/canvas/efl_ui_draggable.eo b/src/lib/evas/canvas/efl_ui_draggable.eo
index 27a8ff3a89..16ea1a1d28 100644
--- a/src/lib/evas/canvas/efl_ui_draggable.eo
+++ b/src/lib/evas/canvas/efl_ui_draggable.eo
@@ -1,35 +1,35 @@
 interface Efl.Ui.Draggable ()
 {
    [[Efl UI draggable interface]]
    event_prefix: efl_ui;
    methods {
         @property drag_target {
              [[Control whether the object's content is changed by drag and drop.
 
                If $drag_target is true, the object can be target of dragging
                object and the content of this object can be changed into
                dragging content. For example, If object deals with image and
                $drag_target is true, user can drag new image and drop it into
                this object. And then this object's image can be changed into
                new image.]]
              set {
              }
              get {
              }
              values {
                   set: bool; [[Turn on or off drop_target. Default is $false.]]
              }
         }
    }
 
    events {
-      drag;
-      drag,start;
-      drag,stop;
-      drag,end;
-      drag,start,up;
-      drag,start,down;
-      drag,start,right;
-      drag,start,left;
+      drag; [[Called when drag operation starts]]
+      drag,start; [[Called when drag started]]
+      drag,stop; [[Called when drag stopped]]
+      drag,end; [[Called when drag operation ends]]
+      drag,start,up; [[Called when drag starts into up direction]]
+      drag,start,down; [[Called when drag starts into down direction]]
+      drag,start,right; [[Called when drag starts into right direction]]
+      drag,start,left; [[Called when drag starts into left direction]]
    }
 }
diff --git a/src/lib/evas/canvas/efl_ui_scrollable.eo b/src/lib/evas/canvas/efl_ui_scrollable.eo
index 7de6a85c89..366e2c02f9 100644
--- a/src/lib/evas/canvas/efl_ui_scrollable.eo
+++ b/src/lib/evas/canvas/efl_ui_scrollable.eo
@@ -1,12 +1,12 @@
 interface Efl.Ui.Scrollable ()
 {
    [[Efl UI scrollable interface]]
    event_prefix: efl_ui;
    events {
-      scroll;
-      scroll,anim,start;
-      scroll,anim,stop;
-      scroll,drag,start;
-      scroll,drag,stop;
+      scroll; [[Called when scroll operation started]]
+      scroll,anim,start; [[Called when scroll animation started]]
+      scroll,anim,stop; [[Called when scroll animation stopped]]
+      scroll,drag,start; [[Called when scroll drag started]]
+      scroll,drag,stop; [[Called when scroll drag stopped]]
    }
 }