This handler returns a list of all categories in an XML format compliant with its DTD, which can be found at <installLocation>/OmniQ/config/dtd/Categories.dtd.
Each category lists the properties ID, document count, display name, and definition. Definition is the query and metadata parameters used to create it.
In a default installation of Sybase Search, you can find this XML handler and its DTD handler respectively, at:
http://<installLocation>:<container-port>/xml/categories
http://<installLocation>:<container-port>/dtd/categories
