element-expression

    Specifies one or more elements. An element expression can be an
    element name, a group name, a wildcard expression, or a list of
    these separated by commas.

 remark

    Specifies a string to be logged in the history file with this
    command, usually used to explain why the command was entered. The
    remark is enclosed in quotation marks. If no remark was entered, a
    null remark ("") is logged.