Dear Simon J. Coles: Thanks for the information on CANDi. You have done a lot of work on that; very impressive indeed. I am printing the message and sharing it with my neurologist and with a colleague in Special Education who works on communication projects with the disabled. Keep up the good work and keep us informed.. With regard to doorknobs, 20 years ago I became interested in converting my house from round to lever handles. On a trip to Britain, I visited a hard- ware store and purchased a number of cheap lever handles that I brought home with me and installed. That might be a convenient and cheaper source of handles . I don't know prices now , so it may not. Mr. Coles, would it be possible for you to do a little reconnaissance on this matter and give us some possibilities and prices? Perhaps even finding a catalogue? Just a thought. All the best. Bob Newbrough ([log in to unmask])