If cursor[enabled] is set to 1 than cursor pagination is enabled and the first set of records are fetched up to the per_page. Cursor pagination will also be turned on if cursor[before] or cursor[after] are set. Records returned will have a cursor property set which can be used to fetch more records in the same sort_by ordering. The cursor value of the last record can be used to fetch records after the current result set and the cursor of the first record can be used to fetch records before the result set.

NOTE: a cursor value is only valid if the sort_by value hasn't changed from the last fetch. For example, you cannot fetch using sort_by id and than pass that cursor value to a sort_by name.