diff --git a/keyboard/hhkb_rn42/MEMO.txt b/keyboard/hhkb_rn42/MEMO.txt
index 86f5faef..28c5a09d 100644
--- a/keyboard/hhkb_rn42/MEMO.txt
+++ b/keyboard/hhkb_rn42/MEMO.txt
@@ -303,3 +303,65 @@ U,<baud>,<parity>       change UART setting tentatively
 V                       display firmware version
 W                       wake from quiet mode    enable discovery and connection
 Z                       deep sleep mode(<2mA)
+
+
+
+help
+----
+*** SET COMMANDS ***
+SA,<3,0>   - Authentication
+SC,<hex>   - Service Class
+SD,<hex>   - Device Class
+SE,<1-16>  - UUID
+SF,1       - Factory Defaults
+SH,<hex>   - HID flags
+SI,<hex>   - Inquiry Scan Window
+SJ,<hex>   - Page Scan Window
+SL,<E,O,N> - Parity
+SM,<0-5>   - Mode (0=slav,1=mstr,2=trig,3=auto,4=DTR,5=Any)
+SN,<name>  - Name
+SO,<text>  - conn/discon Status
+SP,<text>  - Pin Code
+SR,<adr>   - Remote Address
+SS,<text>  - Service Name
+ST,<num>   - Config Timer
+SU,<rate>  - Baudrate
+SW,<hex>   - Sniff Rate
+SX,<1,0>   - Bonding
+SY,<hex>   - TX power
+SZ,<num>   - Raw Baudrate
+S~,<0-6>   - Profile (0=SPP,1=DCE,2=DTE,3=MDM,4=D&S,6=HID
+S?,<0-1>   - role switch
+S$,<char>  - CMD mode char
+S@,<hex>   - io port dir
+S&,<hex>   - io port val
+S%,<hex>   - io boot dir
+S^,<hex>   - io boot val
+S*,<hex>   - pio(8-11) set
+S|,<hex>   - low power timers
+S+,<num>   - DTR timer
+S=,<hex>   - Key mapper
+S:,<num>   - sleep timer
+*** DISPLAY      ***
+D     - Basic Settings
+E     - Extended Settings
+G<X>  - Stored setting
+GB    - BT Address
+GF    - BT Address of Last Connection
+GK    - Connect Status
+G&    - I/O Ports
+V     - Firmare version
+*** OTHER        ***
+C,<adr>    - Connect
+F,1        - Fast Mode
+I,<time>,<cod> - Device Scan Inquiry
+J          - Hide Pin Code
+K,         - Kill (disconnect)
+L,         - toggle local echo
+P,<text>   - Pass Thru
+Q          - Quiet (no discovery)
+R,1        - Reboot
+T,<0,1>    - send data in CMD mode
+U,<rate>,<E,O,N> - Temp Uart Change
+Z          - low power sleep
+&          - Read switches