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The former practice of using 776 field subfield |c Original in records for microfilm reproductions has been discontinued under RDA. Subfield |c Original was used in place of subfields |a, |s, and |t for the catalog entry of the resource reproduced. Although this method is still described in the version of CCM Module 32 that is in Cataloger's Desktop as of 6/24/19, it is being discontinued. See the CONSER Program's web page for an early draft of the revised CCM 32.3, and the MARC documentation about subfield |c: 76x - 78x Linking Entry Fields.
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