- * @param[in] flag set if you want to go the lock state directly - GOTO_STATE_NOW, STAY_CUR_STATE
- * @param[in] timeout lock-timeout in miliseconds.
+ * @param[in] flag set if you want to go the lock state directly
+ * GOTO_STATE_NOW - State is changed directly you want to lock.
+ * STAY_CUR_STATE - State is not changed directly and phone stay current state until timeout expired.
+ * (Default if there is no value in flag.)
+ * HOLD_KEY_BLOCK - Hold key is blocked during locking LCD_NORMAL or LCD_DIM.
+ * Then LCD state transition to LCD_OFF is blocked.
+ * If this flag is not set, phone state is lcd off after pressing hold key.
+ * GOTO_STATE_NOW and STAY_CUR_STATE can't be applied at the same time.
+ * @param[in] timeout lock-timeout in miliseconds.