If you read the 900 posts in Rengo Status you would see that I regularly invite/implore/hint that it would be good for a volunteer (other than me) to do some Rengo documentation.
You would think that amongst all the Rengo enthusiasts who howled for years to have Rengo there would be one willing to do some documentation, but we haven’t found them yet.
Maybe this thread, pointing out how much we need the documentation, will be just the thing to motivate someone.
Anyone interested can contribute here. It doesn’t matter if your knowledge is spot on - if you are wrong, someone will fix it.