You can display the compiled Help file using the Windows Help application (WINHELP.EXE). Windows Help interprets and displays the elements of the Help file—text, pictures, hypertext links, and keyword search index—and lets the user interactively explore the information presented. In a built file, all the features designed into the Help file come into use; for example, users can browse topics as they would in a printed book or use hypertext links to jump around.
Note:
With the exception of being able to add notes and bookmarks, users can only view a compiled Help file; they can’t change the actual content or structure of the file.
Because certain types of errors and authoring mistakes only show up when viewing the built file, the Help author should perform additional testing and debugging at this time. If errors do appear in the built version, the Help author should correct the problem and rebuild the file.