(PECL solr >= 0.9.2) Specifies the type of algorithm to use when faceting a field

(PECL solr >= 0.9.2) Returns whether or not to include the upper bound term in the result set

(PECL solr >= 0.9.2) Returns the minimum counts for facet fields should be included in the response

(PECL solr >= 0.9.2) Enables or disables the Stats component

(PECL solr >= 2.2.0) Orders the documents within the expanded groups (expand.sort parameter).

(PECL solr >= 0.9.2) Enables or disables moreLikeThis

(PECL solr >= 0.9.2) Returns the value of the facet parameter

(PECL solr >= 2.2.0) Returns group functions (group.func parameter values)

(PECL solr >= 0.9.2) The size of fragments to consider for highlighting

(PECL solr >= 2.2.0) Returns the group.sort value