### - i -

- id : ScoreInfo , ContentInfo , NamePart , ThreadObject_Win32 , StationClass
- ident : LanguagePackHeader
- IDLE_TIMEOUT : ClientNetworkContentSocketHandler
- image : ParentSpriteToDraw
- image_1 : DrawIndustryAnimationStruct
- image_2 : DrawIndustryAnimationStruct
- image_3 : DrawIndustryAnimationStruct
- improved_load : OrderSettings
- in_use : Livery
- in_window : CursorVars
- inaugurated_year : NetworkCompanyInfo
- income : NetworkCompanyInfo
- incoming_cargo_waiting : Industry
- ind : ProbabilityHelper
- index : Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tcache, Tzero >::PoolItem< Tpool > , BuildIndustryWindow , SettingEntrySetting , NWidgetCore , NWidgetStacked , NWidgetPartWidget
- indtype : Station
- indtypes : StationNameInformation
- industries_near : Station
- industry_daily_change_counter : Economy
- industry_daily_increment : Economy
- INDUSTRY_MIN_NUMBER_OF_COLUMNS : SmallMapWindow
- infl_amount : Economy
- infl_amount_pr : Economy
- inflation : EconomySettings
- inflation_payment : Economy
- inflation_prices : Economy
- info : NetworkClientSocket , NetworkGameList , GRFConfig
- info_height : IndustryViewWindow
- info_view : ResolverObject
- infos : ClientNetworkContentSocketHandler
- ini_set : BaseMedia< Tbase_set >
- init_proc : Disaster
- init_read : SaveLoadFormat
- init_write : SaveLoadFormat
- initial_city_size : EconomySettings
- initial_interest : DifficultySettings
- initialized : AIAbstractList
- input_cargo_multiplier : IndustrySpec
- instant_close : DropdownWindow
- interest_rate : Economy
- internal_id : EngineIDMapping , Engine
- interval : SettingDescBase
- invalid : MakeEnumPropsT< Tenum_t, Tstorage_t, Tbegin, Tend, Tinvalid, Tnum_bits > , TinyEnumT< Tenum_t >
- invalid_ID : OverrideManagerBase
- is_female : SelectCompanyManagerFaceWindow
- is_freight : CargoSpec
- is_moust_male : SelectCompanyManagerFaceWindow
- is_vertical : Scrollbar
- isConnecting : ClientNetworkContentSocketHandler
- isocode : LanguagePackHeader
- item : IniGroup
- items : FixedSizeArray< T, C >::ArrayHeader , SmallVector< T, S > , Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tcache, Tzero > , AIAbstractList