# Cluster

Set `Cluster` to `True` to cluster the query results. In this case, IDOL Server returns the number of the cluster into which it has grouped each result. You can use ClusterThreshold to set the percentage relevance that results must have to each other to be grouped in one cluster.

NOTE: Each cluster is given an ID. ID `1` is given to the cluster that is formed around the most relevant result document. After this cluster is formed, the cluster with the ID `2` is formed around the most relevant of the remaining results, and so on.

Actions: | Query Suggest SuggestOnText
Type: | Boolean
Default: | False
Example: | `Clusters=True`
See Also: | ClusterThreshold ClusterThreshold configuration parameter

_FT_HTML5_bannerTitle.htm