These functions used as map setup commands are used in other places,
too, so I can't prefix them under the same. The names should match
except I won't repeat "map" in a map setup command name.
Also fixed inmediate in PlaceMapNameFrame.FillTopBottom to calculate the
amount of loops required. (It fills two tiles in the first iteration,
and four in the remaining, hence the `-2` and `+1` part).