### - a -

- A5BLOCK_ALLOW_OFFSET : newgrf.cpp
- A5BLOCK_FIXED : newgrf.cpp
- A5BLOCK_INVALID : newgrf.cpp
- AI_DIR : fileio_type.h
- AI_LIBRARY_DIR : fileio_type.h
- AIC_WIDGET_BACKGROUND : ai_gui.cpp
- AIC_WIDGET_CHANGE : ai_gui.cpp
- AIC_WIDGET_CLOSE : ai_gui.cpp
- AIC_WIDGET_CONFIGURE : ai_gui.cpp
- AIC_WIDGET_CONTENT_DOWNLOAD : ai_gui.cpp
- AIC_WIDGET_DECREASE : ai_gui.cpp
- AIC_WIDGET_INCREASE : ai_gui.cpp
- AIC_WIDGET_LIST : ai_gui.cpp
- AIC_WIDGET_MOVE_DOWN : ai_gui.cpp
- AIC_WIDGET_MOVE_UP : ai_gui.cpp
- AIC_WIDGET_NUMBER : ai_gui.cpp
- AIC_WIDGET_SCROLLBAR : ai_gui.cpp
- AICE_AIRCRAFT_CHECK_ENGINE : newgrf_generic.h
- AICE_ROAD_CHECK_ENGINE : newgrf_generic.h
- AICE_ROAD_GET_FIRST_ENGINE : newgrf_generic.h
- AICE_ROAD_GET_NUMBER_ENGINES : newgrf_generic.h
- AICE_SHIP_CHECK_ENGINE : newgrf_generic.h
- AICE_SHIP_GET_FIRST_ENGINE : newgrf_generic.h
- AICE_SHIP_GET_NUMBER_ENGINES : newgrf_generic.h
- AICE_STATION_GET_STATION_ID : newgrf_generic.h
- AICE_TRAIN_CHECK_RAIL_ENGINE : newgrf_generic.h
- AICONFIG_BOOLEAN : ai_info.hpp
- AICONFIG_INGAME : ai_info.hpp
- AICONFIG_RANDOM : ai_info.hpp
- AIL_WIDGET_ACCEPT : ai_gui.cpp
- AIL_WIDGET_CANCEL : ai_gui.cpp
- AIL_WIDGET_INFO_BG : ai_gui.cpp
- AIL_WIDGET_LIST : ai_gui.cpp
- AIL_WIDGET_SCROLLBAR : ai_gui.cpp
- AIR_AIRCRAFT : aircraft.h
- AIR_CTOL : engine_type.h
- AIR_HELICOPTER : aircraft.h
- AIR_ROTOR : aircraft.h
- AIR_SHADOW : aircraft.h
- AIS_WIDGET_ACCEPT : ai_gui.cpp
- AIS_WIDGET_BACKGROUND : ai_gui.cpp
- AIS_WIDGET_RESET : ai_gui.cpp
- AIS_WIDGET_SCROLLBAR : ai_gui.cpp
- AISAVE_MAX_DEPTH : ai_instance.cpp
- AS_ACCEL : train.h
- AS_BRAKE : train.h
- AUTOSAVE_DIR : fileio_type.h
- AW_SCROLLING_TEXT : misc_gui.cpp
- AW_WEBSITE : misc_gui.cpp
- AWV_DECREASE : widget_type.h
- AWV_INCREASE : widget_type.h
- AWV_LEFT : widget_type.h
- AWV_RIGHT : widget_type.h
- AXIS_END : direction_type.h
- AXIS_X : direction_type.h
- AXIS_Y : direction_type.h