See the MQL5.com article section. It was a big effort for me to get it finished, topped off at the end by their somewhat tricky article editing software. But the editor, Eugene, was very helpful, and it's now up there. A nice WebMoney payment, and an MQL5.com rating that has jumped to 588.
What now? It's been hanging over my head for so long. I get the feeling that it will be rather overwhelming for most readers, although I hope it is taken up by advanced coders and cleaned up in the process. The fact remains that it is really the only way to manage multiple orders on the one symbol in MT5. I'm very prepared to spend time responding to questions and fixing bugs.
But what I really want to do now is to finish off my Neural Network EA, and discover whether the approach that I've been thinking about for so long is going to work. It's coded, but something's wrong with the learning process, and will probably require many hours to find out why.