### - u -

- uninit_read : SaveLoadFormat
- uninit_write : SaveLoadFormat
- unique_id : ContentInfo
- unitnumber_digits : BaseVehicleListWindow
- units : LocaleSettings
- units_volume : CargoSpec
- unshaded_size : Window
- unwanted : Town
- upgrade : ContentInfo
- url : NetworkHTTPContentConnecter , ContentInfo
- use_left_mouse_button : TooltipsWindow
- use_password : NetworkCompanyInfo , NetworkGameInfo
- used : AILog::LogData
- used_set : BaseMedia< Tbase_set >
- user_def_data : RailVehicleInfo