# Find Documents within a Set

You can query the IDOL Content component using `FieldText` with the `BITSET` field specifier to find only documents that are part of a particular set. In this case, you use a decimal value to identify the set number. For example:

    http://localhost:9010/action=Query&FieldText=BITSET{4,18}:BitField

This query returns documents that are part of set `4` or set `18` for sets defined by the `BitField` field.

Related Topics

- BITSET

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