If I provide an answer which is not useful for the person who asked the question, should I delete it?
Obviously, when the answer is off topic (due to a misunderstanding for example), it should not stay on the topic. However, in some case, the answer is constructive but does not fit the enquirer specific needs. This answer will therefore no be accepted but could help someone else. And this answer could have took a lot of time to find...
What do you think I should do in such cases? Is there some rule/guideline here?
pgf
and answers withpstricks
and vice verse. Only the erroneous answers should be deleted.