The e-Zine! magazine (http://www.os2ezine.com) as well as the OS/2 Supersite (http://www.os2ss.com/) both use this preprocessor.
Chris Wenham (the Senior Editor of OS/2 e-Zine! email@example.com) has written a series of articles for e-Zine! which he has allowed me to include in my documentation.
The following articles are available: