The observant among you may have noticed a flurry of darcs activity of late. That’ll be Nicolas and me hiding in Edinburgh (courtesy of Dr P Hancock and Dr K Tourlas) and trying to knock this thing back into shape. It’s coming on. The design document is a bit of a mess. I’ve added a new chapter, just to hold a dump of what we’re doing. Serious editorialisation is required. As for technical details of what’s happening: more later.