dofile(core.get_modpath("airutils") .. DIR_DELIM .. "lib_planes" .. DIR_DELIM .. "global_definitions.lua")
dofile(core.get_modpath("airutils") .. DIR_DELIM .. "lib_planes" .. DIR_DELIM .. "control.lua")
dofile(core.get_modpath("airutils") .. DIR_DELIM .. "lib_planes" .. DIR_DELIM .. "fuel_management.lua")
dofile(core.get_modpath("airutils") .. DIR_DELIM .. "lib_planes" .. DIR_DELIM .. "custom_physics.lua")
dofile(core.get_modpath("airutils") .. DIR_DELIM .. "lib_planes" .. DIR_DELIM .. "utilities.lua")
dofile(core.get_modpath("airutils") .. DIR_DELIM .. "lib_planes" .. DIR_DELIM .. "entities.lua")
dofile(core.get_modpath("airutils") .. DIR_DELIM .. "lib_planes" .. DIR_DELIM .. "forms.lua")
dofile(core.get_modpath("airutils") .. DIR_DELIM .. "lib_planes" .. DIR_DELIM .. "gauges.lua")

--
-- helpers and co.
--

--
-- items
--
