Panasonic KX-TD500 System Reference Manual page 1393

C. HELP Mode
Description Used to display brief instructions and a list of command.
Input Format $ HELP
Display Example
Conditions After displaying the HELP screen, prompt "$" is displayed on the
screen and you can enter the desired mode by entering the "DIG"
command Local Diagnosis.
Displayed Message
$ HELP
* * * * * Help for entering each mode * * * * *
enter the diagnostic mode => DIG
help for using command
$
(1) (2) (3)
DIG (
C R
Displayed Message
* * * * * Error: Illegal main command
* * * * * Error: Illegal sub command
=> HELP
(4) (5)
) HELP ( )
C R
There is an error in the main command.
There is an error in the sub command.
14-C-1
(6) (7) (8)
Meaning