NML:Deactivate other NewGRFs

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Vehicles, Stations, Roadstops, Canals, Towns, Houses, Industries (Tiles), Cargos, Airports+Tiles, Objects, Railtypes, Roadtypes, Tramtypes, Bridges, Badges, Terrain

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Deactivate other NewGRFs

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deactivate(<grfID>[[, <grfID2>], ...]);

With this statement, you can deactivate other NewGRFs. As parameters, you can supply any number of grfids (4-byte strings) to deactivate. Note that using this feature to block incompatible grfs is highly discouraged. Instead, disable your own grf with an error message via the error() statement.