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Indexing Commands - @3@@INDEXSECONDARY@1.

@3@@INDEXSECONDARY@1 produces an index entry with
both a primary and secondary entry. It has
the form: 

@3@@INDEXSECONDARY(PRIMARY="primary",
     SECONDARY="secondary")@1

where @3primary@1 and @3secondary@1 are the primary
and secondary entries respectively.


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R.HARE, TRAINING GROUP, ERCC, 59 GEORGE SQUARE. SCRIBE 3 SLIDE 38.
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