s4 should be locksurface2 according to JM's spreadsheet, and the spec indicates 2 is a clarification of 1, so we can't offer both
EXPORTS
?AddSurfaceHint@RSurfaceManager@@QAEHABVTSurfaceId@@ABVTHintPair@1@@Z @ 1 NONAME ; int RSurfaceManager::AddSurfaceHint(class TSurfaceId const &, class RSurfaceManager::THintPair const &)
?Open@RSurfaceManager@@QAEHXZ @ 2 NONAME ; int RSurfaceManager::Open(void)
?GetSurfaceManagerAttrib@RSurfaceManager@@QAEHW4TSurfaceManagerAttrib@1@AAH@Z @ 3 NONAME ; int RSurfaceManager::GetSurfaceManagerAttrib(enum RSurfaceManager::TSurfaceManagerAttrib, int &)
?CreateSurface@RSurfaceManager@@QAEHABV?$TPckgBuf@VTSurfaceCreationAttributes@RSurfaceManager@@@@AAVTSurfaceId@@ABVRChunk@@@Z @ 4 NONAME ; int RSurfaceManager::CreateSurface(class TPckgBuf<class RSurfaceManager::TSurfaceCreationAttributes> const &, class TSurfaceId &, class RChunk const &)
?SurfaceInfo@RSurfaceManager@@QAEHABVTSurfaceId@@AAV?$TPckgBuf@VTSurfaceInfoV01@RSurfaceManager@@@@@Z @ 5 NONAME ; int RSurfaceManager::SurfaceInfo(class TSurfaceId const &, class TPckgBuf<class RSurfaceManager::TSurfaceInfoV01> &)
?CloseSurface@RSurfaceManager@@QAEHABVTSurfaceId@@@Z @ 6 NONAME ; int RSurfaceManager::CloseSurface(class TSurfaceId const &)
?SynchronizeCache@RSurfaceManager@@QAEHABVTSurfaceId@@HW4TSyncOperation@1@@Z @ 7 NONAME ; int RSurfaceManager::SynchronizeCache(class TSurfaceId const &, int, enum RSurfaceManager::TSyncOperation)
?Close@RSurfaceManager@@QAEXXZ @ 8 NONAME ; void RSurfaceManager::Close(void)
?GetBufferOffset@RSurfaceManager@@QAEHABVTSurfaceId@@HAAH@Z @ 9 NONAME ; int RSurfaceManager::GetBufferOffset(class TSurfaceId const &, int, int &)
?SetSurfaceHint@RSurfaceManager@@QAEHABVTSurfaceId@@ABVTHintPair@1@@Z @ 10 NONAME ; int RSurfaceManager::SetSurfaceHint(class TSurfaceId const &, class RSurfaceManager::THintPair const &)
?GetSurfaceHint@RSurfaceManager@@QAEHABVTSurfaceId@@AAVTHintPair@1@@Z @ 11 NONAME ; int RSurfaceManager::GetSurfaceHint(class TSurfaceId const &, class RSurfaceManager::THintPair &)
?CreateSurface@RSurfaceManager@@QAEHABV?$TPckgBuf@VTSurfaceCreationAttributes@RSurfaceManager@@@@AAVTSurfaceId@@@Z @ 12 NONAME ; int RSurfaceManager::CreateSurface(class TPckgBuf<class RSurfaceManager::TSurfaceCreationAttributes> const &, class TSurfaceId &)
?MapSurface@RSurfaceManager@@QAEHABVTSurfaceId@@AAVRChunk@@@Z @ 13 NONAME ; int RSurfaceManager::MapSurface(class TSurfaceId const &, class RChunk &)
??0RSurfaceManager@@QAE@XZ @ 14 NONAME ; RSurfaceManager::RSurfaceManager(void)
?OpenSurface@RSurfaceManager@@QAEHABVTSurfaceId@@@Z @ 15 NONAME ; int RSurfaceManager::OpenSurface(class TSurfaceId const &)