Allied Telesis AT-8116 - Manual (Page 16)

Command Line Interface
2-6
Typing ? at the CLI prompt displays a list of all the available
command topics and a short explanation about each. Typing in one
of the names on this list will yield a list of the commands under that
topic.
SYS_console>?
Table 2-3 Commands Groups
console Console related commands
system System related commands
ip IP related commands
snmp SNMP related commands
switch-db Switching Database related commands
vlan Virtual LANs related commands
port-cfg Port Configuration related commands
statistics Switching Statistics related commands
sp-tree Spanning Tree related commands