Xantrex XTR6-110, XTR8-100, XTR12-70, XTR20-42, XTR33-25, XTR40-21, XTR60-14, XTR80-10.5, XTR100-8.5, XTR150-5.6, XTR300-2.8, XTR600-1.4 Operating Manual page 175

Command:
[:]SYSTem[<channel>]:HELP:LEGacy?
For example:
:SYST2:HELP:LEG?
Might return:
AUX
OUT
ERR?/qonly/
CLR/nquery/
FOLD
DLY
VSET
ISET
TRG/nquery/
OVP
UVP
HELP?/qonly/
HLP?/qonly/
Querying Help for Command Syntax
The SYSTem[<channel>]:HELP:SYNTax? query causes the
device to return a string containing the syntax specification of the
command associated with the <command_header>, a description of the
command function and any aliases to the command. Each line of the
response is tabbed to the right for readability.
Any <command_header> that is not a valid command header being
recognized by the device, shall cause the device to return a null string
(""). E.g. if the <command_header> contains only a part of the header,
contains an illegal numeric suffix, etc.
The response shall have the following format:
975-0200-01-01
<Description of command>
<command header> <Command parameters
Alias: <list of command that perform the same
function>
SCPI Error/Event Queue
5-53
5