Hey cliff,
the area size mentioned in the ‘New Game’ screen and at the ‘Expand into adjacent factory’ window is too small.
It looks like right - left and bottom - top . But because the left and the top are part of the area +1 must be added in both cases.
One example from my own map:
Correct size of his expansion is 33 x 60 as the data in the mission file is:
left = 0
top = 40
right = 32
bottom = 99
=> 32 - 0 + 1 = 33 // 99 - 40 + 1 = 60
Another example: ‘zone0’ from your ‘mission_small.txt’ - mentioned size is 26 x 25 but counted 27 x 26 …
left = 13
top = 14
right = 38
bottom = 40
Additional the rent was set to 5.95$ per m²:
rent = 5.9500
But only 5$ per square meter are shown.
No idea if this has some more influence as the mentioned cosmetical issues.
Kind regards
P.S.: Sometime I wish to have a ingame measuring tape ;o)