It is difficult to remember the commands of CLI. Is there a help function?
If you press the [ ? ] key, a list of command and parameter candidates and help messages can be displayed.
If there is no candidate list, the carriage return "<cr>" character will be displayed.
For details, refer to "3.6.1 ヘルプを参照する" described in the エッジゲートウェイユーザーズマニュアル. (Currently, only Japanese is available.)