return {
    -- type of machine to handle together
    default_module_row_count = 9,
    module_slots_per_row = 4,
    module_slot_max = 8,
    copy_paste_module = false,
    copy_paste_rotation = false,
    machine = {
    },
    machine_set = {
        ["base"] = {
            ["electric-mining-drill"] = {
                ["module"] = "efficiency-module",
                ["prod"] = true,
            },
            ["pumpjack"] = {
                ["module"] = "efficiency-module",
                ["prod"] = true,
            },
            ["assembling-machine-2"] = {
                ["module"] = "productivity-module",
                ["prod"] = true,
            },
            ["assembling-machine-3"] = {
                ["module"] = "productivity-module-3",
                ["prod"] = true,
            },
            ["electric-furnace"] = {
                ["module"] = "productivity-module-3",
                ["prod"] = true,
            },
            ["beacon"] = {
                ["module"] = "speed-module-3",
                ["prod"] = false,
            },
            ["oil-refinery"] = {
                ["module"] = "productivity-module-3",
                ["prod"] = true,
            },
            ["chemical-plant"] = {
                ["module"] = "productivity-module-3",
                ["prod"] = true,
            },
            ["centrifuge"] = {
                ["module"] = "productivity-module-3",
                ["prod"] = true,
            },
            ["lab"] = {
                ["module"] = "productivity-module-3",
                ["prod"] = true,
            },
            ["rocket-silo"] = {
                ["module"] = "productivity-module-3",
                ["prod"] = true,
            }
        },
        ["space-age"] = {
            ["big-mining-drill"] = {
                ["module"] = "efficiency-module",
                ["prod"] = true,
            },
            ["biochamber"] = {
                ["module"] = "efficiency-module",
                ["prod"] = true,
            },
            ["electromagnetic-plant"] = {
                ["module"] = "productivity-module-3",
                ["prod"] = true,
            },
            ["cryogenic-plant"] = {
                ["module"] = "productivity-module-3",
                ["prod"] = true,
            },
            ["biolab"] = {
                ["module"] = "productivity-module-3",
                ["prod"] = true,
            },
            ["foundry"] = {
                ["module"] = "productivity-module-3",
                ["prod"] = true,
            },
            ["recycler"] = {
                ["module"] = "quality-module-3",
                ["prod"] = true,
            }
        }
    }
}
