command-name

    The name of a PPPD command or PPPD command and command keyword.
    If you enter the HELP command with a command name only, such as
    HELP SET, PPPD displays a list of all of the command keywords
    used with the SET command.

    PPPD> HELP DISCONNECT

    In this example, the HELP DISCONNECT command produces a
    description of the DISCONNECT command and shows the command
    format.