### - i -

- IACT_MAPGENERATION : newgrf_industries.h
- IACT_RANDOMCREATION : newgrf_industries.h
- IACT_USERCREATION : newgrf_industries.h
- ICON_CMDLN_SIZE : console_internal.h
- ICON_MAX_STREAMSIZE : console_internal.h
- ICT_MAP_GENERATION : industrytype.h
- ICT_NORMAL_GAMEPLAY : industrytype.h
- ICT_SCENARIO_EDITOR : industrytype.h
- ICT_UNKNOWN : industrytype.h
- IGNORE_UNTIL_ELSE : depend.cpp
- IGNORE_UNTIL_ENDIF : depend.cpp
- IGT_LIST : ini_type.h
- IGT_VARIABLES : ini_type.h
- INDUSTRY_COMPLETED : industry_type.h
- INDUSTRY_TRIGGER_256_TICKS : newgrf_industries.h
- INDUSTRY_TRIGGER_CARGO_DELIVERY : newgrf_industries.h
- INDUSTRY_TRIGGER_TILELOOP_PROCESS : newgrf_industries.h
- INDUSTRYBEH_AFTER_1960 : industrytype.h
- INDUSTRYBEH_AI_AIRSHIP_ROUTES : industrytype.h
- INDUSTRYBEH_AIRPLANE_ATTACKS : industrytype.h
- INDUSTRYBEH_BEFORE_1950 : industrytype.h
- INDUSTRYBEH_BUILT_ONWATER : industrytype.h
- INDUSTRYBEH_CAN_SUBSIDENCE : industrytype.h
- INDUSTRYBEH_CANCLOSE_LASTINSTANCE : industrytype.h
- INDUSTRYBEH_CHOPPER_ATTACKS : industrytype.h
- INDUSTRYBEH_CUT_TREES : industrytype.h
- INDUSTRYBEH_DONT_INCR_PROD : industrytype.h
- INDUSTRYBEH_NOBUILT_MAPCREATION : industrytype.h
- INDUSTRYBEH_ONLY_INTOWN : industrytype.h
- INDUSTRYBEH_ONLY_NEARTOWN : industrytype.h
- INDUSTRYBEH_PLANT_FIELDS : industrytype.h
- INDUSTRYBEH_PLANT_ON_BUILT : industrytype.h
- INDUSTRYBEH_PROD_MULTI_HNDLING : industrytype.h
- INDUSTRYBEH_PRODCALLBACK_RANDOM : industrytype.h
- INDUSTRYBEH_TOWN1200_MORE : industrytype.h
- INDUSTRYLIFE_BLACK_HOLE : industrytype.h
- INDUSTRYLIFE_EXTRACTIVE : industrytype.h
- INDUSTRYLIFE_ORGANIC : industrytype.h
- INDUSTRYLIFE_PROCESSING : industrytype.h
- INDUSTRYTILE_NOANIM : industry_type.h
- INVALID_AXIS : direction_type.h
- INVALID_COMPANY : company_type.h
- INVALID_DIAGDIR : direction_type.h
- INVALID_DIR : direction_type.h
- INVALID_INDUSTRYTILE : industry_type.h
- INVALID_INDUSTRYTYPE : industry_type.h
- INVALID_OWNER : company_type.h
- INVALID_RAILTYPE : rail_type.h
- INVALID_RAILTYPES : rail_type.h
- INVALID_ROADTYPE : road_type.h
- INVALID_ROADTYPES : road_type.h
- INVALID_TRACK : track_type.h
- INVALID_TRACK_BIT : track_type.h
- INVALID_TRACKDIR : track_type.h
- INVALID_TRACKDIR_BIT : track_type.h
- IS_PALETTE_COLOUR : gfx_type.h