Here is a far better version: previous one (based on post for 2.4.8) didn't display most of the help info!
I discover that we sometimes have to prefix single quote with backslash, sometimes with two backslashes! And, naturally, we do not know when to do that! I had to change and test everything!
So, I hope this new version will be used by many people as possible: I spent many hours on that! :-( But it is my contribution to the community :-)