The browse request returns the descendents of the starting item set and possibly descendents of these children sets, and so on. Normally, these descendent sets are returned in index order, which means how ever they were encountered during indexing. The order of the descendents within a single item set is controlled by the following attribute:
<browse setSort="sort"The sort value determines the sort order of the descendent sets. A value of alpha means the sets are sorted by name. A value of size means the sets are sorted by largest to smallest size. The default value is none, which means no sorting is performed.
