[keyword...]

    Specifies zero or more keywords that indicate what information
    you want. Information is located in a hierarchical manner,
    depending on the level of information required. The levels are
    as follows:

    1. None-Lists the ACS commands and selected topics.

    2. Topic-Provides information about the topic.

    3. Command-Describes the command, its format, and parameters, and
       lists its qualifiers.

    4. Command followed by a qualifier-Describes the use of the
       qualifier. For example, CHECK/LOG describes the use of the
       /LOG qualifier.

    If you specify an asterisk (*)  in place of any keyword, the HELP
    command displays all information available at that level.

    You can specify percent signs (%)  and asterisks (*) in the
    keywords as wildcard characters.