Что есть BookThinker?

"However there is a book engine called bookThinker , whose job is to simulate a opening book by playing the first few moves based on a database of opening moves before passing control over to the bookless engine once it has run out of moves. In theory it should work with The King, but for technical reasons it doesn't work well when coupled with the need to send command line parimeters in the winboard.ini file. The King of course needs to send the OPK number as a command line parameter..."

http://www.aarontay.per.sg/Winboard/Winboard4.html#[D.3.7]