### - s -

- S_FREE_MASK : spritecache.cpp
- SAVEGAME_VERSION : gamelog.cpp , saveload.cpp
- SCREENSHOT_NAME : screenshot.cpp
- scrollamt : window.cpp
- SEND_MTU : config.h
- SETTING_HEIGHT : settings_gui.cpp
- SIG_GLOB_SIZE : signal.cpp
- SIG_GLOB_UPDATE : signal.cpp
- SIG_TBD_SIZE : signal.cpp
- SIG_TBU_SIZE : signal.cpp
- signal_type_names : dbg_helpers.cpp
- SNOW_LINE_DAYS : landscape.h
- SNOW_LINE_MONTHS : landscape.h
- SPR_AIRPORT_PREVIEW_BASE : sprites.h
- SPR_AQUEDUCT_BASE : sprites.h
- SPR_CLONE_TRAIN : sprites.h
- SPR_CURSOR_DEMOLISH_FIRST : sprites.h
- SPR_CURSOR_MOUSE : sprites.h
- SPR_FLAGS_BASE : sprites.h
- SPR_HALFTILE_FOUNDATION_BASE : sprites.h
- SPR_ONEWAY_BASE : sprites.h
- SPR_OPENTTD_BASE : sprites.h
- SPR_RAILTYPE_TUNNEL_BASE : sprites.h
- SPR_SHORE_BASE : sprites.h
- SPR_TRACKS_FOR_SLOPES_BASE : sprites.h
- SPR_TRAMWAY_BASE : sprites.h
- SQUIRREL_MAX_DEPTH : script_instance.hpp
- STATION_ACCEPTANCE_TICKS : date_type.h
- STATION_RATING_TICKS : date_type.h
- SUBSIDY_CARGO_MIN_POPULATION : subsidy_base.h
- SUBSIDY_CONTRACT_MONTHS : subsidy_base.h
- SUBSIDY_MAX_DISTANCE : subsidy_base.h
- SUBSIDY_MAX_PCT_TRANSPORTED : subsidy_base.h
- SUBSIDY_OFFER_MONTHS : subsidy_base.h
- SUBSIDY_PAX_MIN_POPULATION : subsidy_base.h