staticconstIndustryTypeNUM_INDUSTRYTYPES_PER_GRF=128;///< maximum number of industry types per NewGRF; limited to 128 because bit 7 has a special meaning in some variables/callbacks (see MapNewGRFIndustryType).
staticconstIndustryTypeNUM_INDUSTRYTYPES=240;///< total number of industry types, new and old; limited to 240 because we need some special ids like INVALID_INDUSTRYTYPE, IT_AI_UNKNOWN, IT_AI_TOWN, ...
staticconstIndustryGfxNUM_INDUSTRYTILES_PER_GRF=255;///< Maximum number of industry tiles per NewGRF; limited to 255 to allow extending Action3 with an extended byte later on.