/EXPIRED=keyword(=value)

    This qualifier is used in combination with 3 possible
    keywords BEFORE=date, SINCE=date or NONE. The
    expiration date is used in for selecting files.
    Either use SINCE and BEFORE or NONE , but not
    both. The NONE keyword returns files which don't
    have a expiration date recorded. Examples :

    o  /EXPIRED=BEFORE=date
    o  /EXPIRED=(BEFORE=date,SINCE=anotherdate)
    o  /EXPIRED=NONE