element-expression

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

 group-expression

    Specifies one or more groups into which the element or elements is
    to be inserted. A group expression can be a group name, a wildcard
    expression, or a list of these separated by commas.

 remark

    Specifies a character 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.