For the last several weeks, @oafcmetty has spent God knows how many hours devising a new, and better, system. He and I have done a number of dummy runs now, changing bits here, improving bits there. There's a complete 'User Guide' below, so please read through it, follow the links and it will all come together.   But, before you do that, please join me in thanking @oafcmetty for giving up so much of his spare time to create this for all of us . I think Mrs Metty has forgotten what he l