I have mentioned previously that it would be very nice to access to past sent PMs, to avoid embarrassing inability to recall what I said to whom. Also I suspect that I am not the only one ignorant about some of the terminology used about threads, flat vs threaded, causes of "wide screen syndrome" etc. A discussion of these topics ought be included in instructions for inexperienced members.I remind myself of the poor soul turned down for promotion because he had had one year's experience twenty times.