Welcome to "Extras" they are extra cleo mods that add more features to the Flying Fortress
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B17cleo folder 
"AddOn_Hatch_NEVADA.cs" -> You can open bomb bay doors if you press "SPACE" key
"B17contrails.cs" -> Adds contrails at high altitude
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Real name folder 
"nevada.fxt" -> It replaces the name "NEVADA" with "Boeing B-17G" 

Move folders to modloader or copy all of them in the same folder of Boeing B-17G in Modloader!