When is it correct to answer "Please, RTFM because this is what I'm doing to answer your question/comment?"
I must admit that sometimes I answer not formally correct questions (without MWE, which doesn't show any effort, ...), just like some other users, but I do so hoping that the answer encourage OP's effort in understanding it and LaTeX in general.
I also have to say that a lot of my answers are possible after reading/consulting package manuals or searching through TX.SX because my memory is not good enough to remember the big amount of
So, I don't feel comfortable when questioners make new questions in comments or editing the original which can be easily answered after a quick view to package documentation. I'd like to answer RTFM.
What's the correct behavior? After how many questions can we answer RTFM without breaking TeX.SX etiquette?
After David's suggestion: Of course I won't answer RTFM under no circumstances. But I think we should more frequently suggest to take a look at package documentation, even more if we know it's worth to do it.