When I only started to use SO, I read and especially memorized this FAQ topic:
And I think that it is trying to say only "Your answer can be edited by other user". But maybe the users think (especially new) that it says "Your answer can be edited and you can edit answers of others". Maybe I'm wrong, but I just think so.
Now I read about editing other answers here, on Meta, and understood that editing original author answer is not good in most cases. It's better to add a comment or post separate answer. And if answer is works, voted and already accepted it's better don't touch anything. That's clear and OK.
The point is that I recently faced the answer, in one part of which, in my view, must be important remark. Because I guess original author just quickly copied the portion of its code, but didn't explain the real meaning. And the answer is working perfectly well by itself, but does not answer the question completely. I wanted to add important comment inside the source code (not just add comment below). I tried to carefully edit original response, but my suggested edit was rejected. And now I just want to figure out what I did wrong.
So I want to know more about this on the future. How should or shouldn't I edit original author answers in other cases, besides a simple grammatical/spelling or minor mistakes fixes?
And what is the meaning of "clarify meaning" phrase really is? Can you give me examples of such good edits?