Makefile
# Build Options
# comment out to disable the options.
#
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 # 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