Could someone list or give me a link to all the letters and numbers used here. Or tell me which forum I can post this in.
I don't understand what they indicate. The most important one for me is "Follow Your Own Posts by Default" in SETTINGS and on this page. Choice is M or N. I'm guessing that N is No. So what does M stand for.
At least the ones for posting message have popups to tell you what they are, except for I want to follow this post. Where do they come up with these letters which don't relate to a word starting with the letter?