diff --git a/src/lib/ecore_imf/Ecore_IMF.h b/src/lib/ecore_imf/Ecore_IMF.h
index 6dc31f79d9..c3b097c41e 100644
--- a/src/lib/ecore_imf/Ecore_IMF.h
+++ b/src/lib/ecore_imf/Ecore_IMF.h
@@ -313,10 +313,10 @@ typedef enum
 
 enum
 {
-   ECORE_IMF_INPUT_PANEL_LAYOUT_NUMBERONLY_VARIATION_NORMAL,
-   ECORE_IMF_INPUT_PANEL_LAYOUT_NUMBERONLY_VARIATION_SIGNED,
-   ECORE_IMF_INPUT_PANEL_LAYOUT_NUMBERONLY_VARIATION_DECIMAL,
-   ECORE_IMF_INPUT_PANEL_LAYOUT_NUMBERONLY_VARIATION_SIGNED_AND_DECIMAL
+   ECORE_IMF_INPUT_PANEL_LAYOUT_NUMBERONLY_VARIATION_NORMAL,            /**< The plain normal number layout @since 1.8 */
+   ECORE_IMF_INPUT_PANEL_LAYOUT_NUMBERONLY_VARIATION_SIGNED,            /**< The number layout to allow a positive or negative sign at the start @since 1.8 */
+   ECORE_IMF_INPUT_PANEL_LAYOUT_NUMBERONLY_VARIATION_DECIMAL,           /**< The number layout to allow decimal point to provide fractional value @since 1.8 */
+   ECORE_IMF_INPUT_PANEL_LAYOUT_NUMBERONLY_VARIATION_SIGNED_AND_DECIMAL /**< The number layout to allow decimal point and negative sign @since 1.8 */
 };
 
 struct _Ecore_IMF_Event_Preedit_Start