"Things You Wouldn't Know If We Didn't Blog Intermittently."
It unfolds from a little square into a bigger, four-sectioned overview of the city-center. Any of these four quarters can then be folded out... to reveal a larger, zoomed version of the plan.
The Japanese have been making maps like these of, for example, Tokyo, for quite awhile. They are very clever and easy to manage.
Try Wiktionary for gullible
Pietr, you do understand there's a joke involved in that statement, don't you?...