pkg_cache_reset         Reset cached package indexes
pkg_macros              Load a package's Rd macros
pkg_search_attached     Packages searched for help by default
pkg_search_deps         Packages to search for topics in a package's
                        dependencies
pkg_topics              List the topics documented by a package
topic_exists            Is a topic documented?
topic_find              Find packages that document a topic
topic_origin            Find the package where a topic's object
                        originates
topic_qualifier         Find the package qualifier for a topic
topic_rd                Get the parsed Rd for a topic
topic_rd_path           Get the path to the Rd file for a topic
topic_split             Split a qualified topic into package and topic
