# Cardinal Placement Rules

Cardinal placement rules allow you to insert documents at a specified location in a results list for a query.

The table shows all the fields that you must include in an IDX file for cardinal placement rules.

Required IDX fields for cardinal placement rules

Field | Description | Content type or value
--- | --- | ---
`#DREREFERENCE` | The reference for the rule. | String
`#DRETITLE` | The title of the rule. | String
`QMSTYPE` | The type of the QMS rule. | `1`
`QMSAGENTBOOL` | The AgentBoolean expression used to match the original query text. | Boolean matching expression
`QMSVALUE1` | The reference of the document to insert. | String
`QMSVALUE2` | The position at which to insert the cardinal placement document in the results. | Number (result position)
`#DRECONTENT` | The content to match the Boolean field. | Keywords from the AgentBoolean string

You must also add the `ALWAYSACTIVE` field with the value `True`, or a `SCHEDULE` field with iCalendar data. See Create a QMS Rule IDX Document.

Related Topics

- Create Query Manipulation Server Rules
- Create a QMS Rule IDX Document

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