-# define PS2_CLOCK_PORT PORTF
-# define PS2_CLOCK_PIN PINF
-# define PS2_CLOCK_DDR DDRF
-# define PS2_CLOCK_BIT 0
-# define PS2_DATA_PORT PORTF
-# define PS2_DATA_PIN PINF
-# define PS2_DATA_DDR DDRF
-# define PS2_DATA_BIT 1
-*/
-#endif
+ * Feature disable options
+ * These options are also useful to firmware size reduction.
+ */
+/* disable debug print */
+//#define NO_DEBUG
+
+/* disable print */
+//#define NO_PRINT
+
+/* disable action features */
+//#define NO_ACTION_LAYER
+//#define NO_ACTION_TAPPING
+//#define NO_ACTION_ONESHOT
+//#define NO_ACTION_MACRO
+//#define NO_ACTION_FUNCTION