As most of Travel-SE regulars already know, we use IATA codes for airport tags.
Such codes are often quite uninformative which airport they refer to if their tag wiki is empty, and it's not clear if the three-letter combination actually represents an airport, is unrelated acronym or just a proper name.
I've previously used some sort of personal template for such tags, and I think we can try and standardize on one. I've added the one I typically use as an answer. The related tags part is particularly helpful to find questions for related airports.
See jfk for an example of a bare-bones tag wiki following this template.
Comments and suggestions concerning the above template welcome. Please don't add new answers unless you feel the template needs substantial revision, but do comment on the question or on the template below in the answer area.