You can edit a pattern that you have already created. The newly-edited pattern will be reflected in the 853 field in the holdings record (Record tab), but will not change any existing 863 (holdings) fields. If you have multiple patterns, you must first highlight a holdings statement in the OPAC view display that corresponds to that pattern. Then choose Tools | Pattern Menu | Edit Pattern. The example below shows editing the existing pattern, and the change that it makes in the 853 field:
Edit an existing captions and pattern field.
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