It is possible to include the help server and system in an RCP application, or to host the help server as a standalone application. The help system is made up of a number of separate plug-ins:
org.eclipse.help.webapp: This serves the HTML pages and provides the web API to search and navigate (needsorg.eclipse.equinox.http.jettyto run)org.eclipse.help.ui: This provides actions/commands for the help pages and the help browser view, along with preference pagesorg.eclipse.help: This provides the extension points for indexes and table of contentsorg.eclipse.help.base: This provides the InfoCenter application and index searching ability
There are of course a number of dependencies such as the core expressions that are used to provide content filtering, and the Jetty server which is used to provide the web application. When adding help to an RCP, ensure that the optional dependencies of the aforementioned plug-ins are included in order for it to work as expected.