- o -
- obj
: ObjectScopeResolver
- obj_len
: SaveLoadParams
- OBJECT_MARGIN
: BuildObjectWindow
- object_scope
: ObjectResolverObject
- occupied
: RoadStop::Entry
- ocean_speed_frac
: ShipVehicleInfo
- offs
: TileHighlightData
- offs_start_map
: SpriteAlignerWindow
- offset
: UnmappedChoiceList
, OldChunks
, Blitter_32bppOptimized::SpriteData
, StringParameters
, Blitter_8bppOptimized::SpriteData
, BmpInfo
, CompanyManagerFaceBitsInfo
, LoggedChange
, NIProperty
, NICallback
- offsets
: LanguagePackHeader
- oil_refinery
: ExtraPaletteValues
- oil_refinery_limit
: GameCreationSettings
- ok_button
: QueryString
- okay
: PBSTileInfo
- old
: Vehicle
- old_act
: TransportedCargoStat< Tstorage >
- old_d
: UnmappedChoiceList
- old_economy
: CompanyProperties
- old_max
: TransportedCargoStat< Tstorage >
- old_max_loan_unround
: Economy
- old_max_loan_unround_fract
: Economy
- old_refittable
: ShipVehicleInfo
- old_tile
: GetNewVehiclePosResult
- oldval
: LoggedChange
- online
: NetworkGameList
- open
: NewsSettings
- openlist_hash
: AyStar
- openlist_queue
: AyStar
- openttd_id
: LanguageMap::Mapping
- opf
: PathfinderSettings
- opt
: GetOptData
- options
: GetOptData
- order
: Listing
, GameSettings
, RefitWindow
- order_over
: OrdersWindow
- order_review_system
: GUISettings
- orders
: OrderBackup
, Vehicle
- ordinal_width
: CompanyLeagueWindow
- orientation
: RailStationGUISettings
- orig_list
: NewGRFWindow
- orig_str_buf
: OskWindow
- origin
: Path
- original_image_index
: Engine
- original_md5sum
: GRFConfig
- os2_bmp
: BmpInfo
- osk_activation
: GUISettings
- other_accepted
: CargoesField
- other_company_name
: CompanyNewsInformation
- other_produced
: CargoesField
- outersize
: TileHighlightData
- outgoing_queue
: ServerNetworkGameSocketHandler
- output_buffer
: OutputStore
- overdrawn_ops
: Squirrel
- override
: GRFFileProps
- overtaking
: RoadVehicle
- overtaking_ctr
: RoadVehicle
- own_name
: LanguagePackHeader
- owner
: ThreadMutex_pthread
, CargoPayment
, Industry
, Vehicle
, Group
, BaseStation
, Window
, TileDesc
- owner_type
: TileDesc