diff --git a/README.md b/README.md
index e0b837df..3b700970 100644
--- a/README.md
+++ b/README.md
@@ -171,6 +171,7 @@ Note that ***comment out*** to disable them.
     MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
     EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
     CONSOLE_ENABLE = yes        # Console for debug(+400)
+    COMMAND_ENABLE = yes        # Commands for debug and configuration
     SLEEP_LED_ENABLE = yes      # Breathing sleep LED during USB suspend
     #NKRO_ENABLE = yes          # USB Nkey Rollover - not yet supported in LUFA
     #PS2_MOUSE_ENABLE = yes     # PS/2 mouse(TrackPoint) support
diff --git a/keyboard/gh60/Makefile.lufa b/keyboard/gh60/Makefile.lufa
index f740dea8..f153bc31 100644
--- a/keyboard/gh60/Makefile.lufa
+++ b/keyboard/gh60/Makefile.lufa
@@ -103,14 +103,14 @@ BOOTMAGIC_ENABLE = yes	# Virtual DIP switch configuration(+1000)
 MOUSEKEY_ENABLE = yes	# Mouse keys(+4700)
 EXTRAKEY_ENABLE = yes	# Audio control and System control(+450)
 CONSOLE_ENABLE = yes	# Console for debug(+400)
-COMMAND_ENABLE = yes    # Magic command
+COMMAND_ENABLE = yes    # Commands for debug and configuration
 SLEEP_LED_ENABLE = yes  # Breathing sleep LED during USB suspend
 #NKRO_ENABLE = yes	# USB Nkey Rollover - not yet supported in LUFA
 #PS2_MOUSE_ENABLE = yes	# PS/2 mouse(TrackPoint) support
 
 
 # Optimize size but this may cause error "relocation truncated to fit"
-EXTRALDFLAGS = -Wl,--relax
+#EXTRALDFLAGS = -Wl,--relax
 
 # Search Path
 VPATH += $(TARGET_DIR)
diff --git a/keyboard/gh60/Makefile.pjrc b/keyboard/gh60/Makefile.pjrc
index f03ca941..290f7cb8 100644
--- a/keyboard/gh60/Makefile.pjrc
+++ b/keyboard/gh60/Makefile.pjrc
@@ -80,8 +80,9 @@ OPT_DEFS += -DBOOT_SIZE=4096
 BOOTMAGIC_ENABLE = yes	# Virtual DIP switch configuration(+1000)
 MOUSEKEY_ENABLE = yes	# Mouse keys(+5000)
 EXTRAKEY_ENABLE = yes	# Audio control and System control(+600)
-NKRO_ENABLE = yes	# USB Nkey Rollover(+500)
 CONSOLE_ENABLE = yes    # Console for debug
+COMMAND_ENABLE = yes    # Commands for debug and configuration
+NKRO_ENABLE = yes	# USB Nkey Rollover(+500)
 #PS2_MOUSE_ENABLE = yes	# PS/2 mouse(TrackPoint) support
 
 
diff --git a/keyboard/gh60/config.h b/keyboard/gh60/config.h
index 7da5c6bb..679ff366 100644
--- a/keyboard/gh60/config.h
+++ b/keyboard/gh60/config.h
@@ -56,15 +56,24 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 #define BOOTLOADER_SIZE 4096
 
+
+
+/*
+ * Feature disable options
+ *  These options are also useful to firmware size reduction.
+ */
+
 /* disable debug print */
 //#define NO_DEBUG
+
 /* disable print */
 //#define NO_PRINT
 
-#define NO_ACTION_KEYMAP
-#define NO_ACTION_OVERLAY
-#define NO_ACTION_TAPPING
-#define NO_ACTION_MACRO
-#define NO_ACTION_FUNCTION
+/* disable action features */
+//#define NO_ACTION_KEYMAP
+//#define NO_ACTION_OVERLAY
+//#define NO_ACTION_TAPPING
+//#define NO_ACTION_MACRO
+//#define NO_ACTION_FUNCTION
 
 #endif