'help map' only shows you the map of the newbie zone.
'help bywater' only shows you the map of Bywater.
There are no other in-game help maps, and this is deliberate. We want people to explore and be able to create their own maps.
I have looked into some mini-map code here and there, but I keep running into problems with the code. It usually shows too much, sometimes not enough, and always without some sort of line of site blocking. if I could find such a snippet to fit all of the conditions I want, in addition to the ones you want for tracking explored rooms, that would rule.
Right now, I have neither the skill to come up with it, nor the time to invest in trying. Life has taken away much of my development time and desire to work on things in general lately.