I was refering to the NaNo....if the only reason you want the map is as a reference for the story and you are never touching or plan on using it in the future, I wouldn't spend too much time sweating the details that you will never need. A rough sketch of the city and important locations would be all you really need. If, however, you plan to continue using the city, be it for your own personal reference or for others to see, by all means put as much detail as you want, but I would still suggest doing it as required.

File 13 is a reference to a file system from the old paper days.....it was most often located at the side of a desk, round, and usually filled with round(ish) balls of paper.... Sometimes it was placed on the other side of small rooms and the papers were delivered to the File via a Manual Launching System.....

I still use this File system from time to time. Call me old fashioned.