Why exactly this "guide"? Because in spite of all the kinds of tutorials out there, a lot of maps I've come across in recent past, as well as my very own first few mapping attempts and even "high profile" releases, seem to struggle every once in a while with a supposedly simple aspect of mapping.   What can I learn here, and will there be a quiz after? If you're interested in getting the desired effect out of your teleport closets in the future, this piece of work right he