and the third feature of this kind of map is that where the actual jie graphical information resides, primarily, is along the coast -- geographical information resides, primarily is along the coast and you see place names that run perpendicular to the coast and change direction as the coast does and that is what sailors were most interested in, finding safe harbors to sail in and knowing what towns they could safely pass by, that kind of thing, and you can get a better sense of what they would have been using if you look at the library of congress's own sailors charts, a very rare and early one and is a lot more like what sailors might have been using and is a picture of the mediterranean basin, too, and if you zero in on italy in particular you can see the place names are pretty much defining the coastline and there is nothing in the interior and sailors didn't care about what was in the interior. what i loved learning about in this particular context is that prior to the emergence of this kind of map, europeans didn't talk about italy as a boot and we thing of it as a bad now, but,