I have admittedly revised the question, several times, in order to comply with the requirements of "non meta" blender stack-exchange. At first I had a request for opinion, I removed. Then I was accused of not trying to look up the information: I did; however I admit I was thinking Warning! Not informational, which it turned out to be. And yet, there is one particular individual who has insisted that this question is off topic and was able to raise support and get the question closed as off topic. I accept that the question was asked and answered, for which I'm grateful; but, why the close because of off topic?
Link to question: Add-on has a warning that "this script is RC". What does this mean?
So, wanting to be a good participant in StackExchange, I have been trying to find out how this is off topic. If such a simple and not so obvious answer to someone new is a forbidden question, what do the guidelines mean?
I read if you need a .blend file to answer the question, the question is off topic; But, I see people request blend files, and give them, even tutorials to answer questions all the time. (so far I don't have an issue with this, and a blanket statement that it's off topic, and should be somewhere else is understandable but....)
However confusing that is, this is about how the ruling on my question was decided, and why it is off topic, or possibly on topic; and the reference to the violations are about the "HELP" comment #9 Support Requests on this page: What questions should be definitely off-topic? are only used to give an example of how confusing this can be and how it is possible that people with a vendetta (unknown reasons on my part). In my case, the answer is obvious once one knows the answer. But, with is listed as a Warning, without knowing the answer, the answer is not so obvious.