ATG Search applies rules to determine what categories are relevant to a user queries (see the Categorization Process section of the Query Concepts and Processes chapter). One use of this functionality is to automatically add the most relevant categories as constraints on the query itself, narrowing the search to the more appropriate content. These automatic constraints are controlled by the following attribute:

<structquery autocat="max"
<structquery autocat="maxp"

The max value is the maximum number of categories to add as constraints. Multiple categories are added as a Boolean OR of document set constraints, joined (that is, AND’ed) to the pre-existing constraints. If the max value is appended with a p, then the optional taxonomy pruning post-processing algorithm is used during categorization.

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