class-expression

    Specifies the class or classes to be deleted from the CMS library.
    A class expression can be a class 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.