Specialized Administration > Windchill Runtime Architectural Overview > Windchill Web Application and the Windchill Help Center
  
Windchill Web Application and the Windchill Help Center
As part of a Windchill installation, the Windchill documentation (both online help and reference topics) is installed as a separate Web application, called the Windchill Help Center, and is configured in the servlet engine. To provide a comprehensive search capability and easy access to online help and Windchill reference topics, Windchill Help Center is maintained outside of your Windchill codebase directory in the WHC directory. Users can get access to the Windchill Help Center by selecting Windchill Help Center from Quick Links > Help at the top of any Windchill page or by clicking any help icon in the interface.
Additionally, many administrative, installation, upgrade, and customization topics are included in guides (in PDF format) so the topics can be accessed outside of the Windchill Help Center. You can access the latest version of each of the Windchill guides from the Reference Documents link of the PTC Web site at the following URL:
http://www.ptc.com/appserver/cs/doc/refdoc.jsp
The user interacts with Windchill through the Windchill web application. For details on accessing the Windchill interface, see the Windchill Fundamentals section in the help center.
For a diagram of the complete Windchill and WHC directory structures, see Directory Structure.