Carl has recently been working hard on writing documention for the recently released OpenInsight 10.1 version and some completed chapters of the brand new ‘OpenInsight Presentation Server Reference Manual’ are now available from his RevDevX blog.
Work is ongoing to complete the other chapters and to integrate this into OpenInsight’s online help system and the main website. In the meantime, please refer Carl’s blog page (linked below) as needed.
Martyn's RevSoft UK Blog 
Excellent. I think this will be good for OI developers and prospective developers