🚀 go-pugleaf

I'm playing around with winboard 4.0.5, having just installed it.  It
seems as though gnuchess 5.0 is not using the opening book.  The reason
I say that is because it takes gnuchess 4.0 no time to respond to my
opening move (e4), while gnuchess takes 12 seconds to respond to the
same opening move.  Also, when I ask for "help, book ...", gnuchess 4.0
(within winboard, of course) gives a list of moves, while gnuchess 5.0
seems to ignore me.  I would have thought my explicitly asking it to
look in the book would have, at least, lead to a "what book?" response,
so I'm not sure what ignoring me means.  book.dat is there, so the file
isn't missing.  Any ideas?

Richard.