element-expression

    Specifies one or more elements whose generations are to be
    rejected. 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 character string to be associated with the element
    generation specified, to be logged in the history file with this
    command. The remark is enclosed in quotation marks. If no remark
    was entered, a null remark ("") is logged.