Just an update to let you know that although we’ve been rather quiet recently that doesn’t mean nothing is happening. We’re still working on finding a structure that will work across all Physics topics and in this the work you did is proving invaluable. We now have access to the IOE library and are beginning to collect educational research relevant to the map. We have investigated a lot of different software options and produced a specification of what we want. We are now working on making contacts in the area of knowledge representation and getting some expert advice on software solutions.