City Present (Visible Tile Improvements)

[keu]

I'm working in the hex-edit of savegame. And now I see that "City present" flag in the "Visible Tile Improvements" section is set regardless of is this city visible for any tribe or not visible.

In other words, I'm creating a settler far from any civ's cities and units, building city and after that all 7 civs getting "City Present" flag for that tile. But in the game there isn't a city painted in that tile (excepting for civ has built it, of course).

I'm confused.

P.S. ToT 1.1.
Using Catfish's "Saved Game File Format for Test of Time 1.1" reference.

UPDATE: probably the 15th byte of city data ("A tribe's knowledge of the city's existence") works here.

 

[Catfish]

It's been a long time, so I'm a little rusty, but I think you've answered your own question. In WotR I used the 15th city byte to set cities as unexplored. I don't remember what effect, if any, the second bit of the visible tile improvements bytes has on the game. It may simply be a legacy that was overridden during development, because it's not required to make a city visible.