863-865 Open-ended statements:

When recording summary holdings (Leader/17, code 3) , an open-ended statement, that is, one ending with a hyphen to show continuing receipt, may be used. Example:

However, detailed holdings statements (Leader/17, code 4 or 5) must contain the enumeration and chronology for the last item reported because the most recently received item must be known in order to determine possible gaps in future receipts. Example: