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Notes that contain processing information for staff do not display in the OPAC. Staff notes pertaining to the whole copy are recorded in the subfield $x of the 852. Use subfield $x of the 866, 867, or 868 for notes referring to that holdings statement. Several notes may be recorded for a single copy, but each should be in a separate $x subfield. When recording a note containing processing information for staff use, refer to Abbreviations Used in Notes to select appropriate abbreviations. If there is no abbreviation, record a concise note in your own words.

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868   $x Discard 6-month index when cumulative 12-month index arrives.

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