Bio_Industries_2/Bio_Industries_2/settings.lua

local setting_list = {}
        -- Add/enable stuff
setting_list.BI_Solar_Additions = {
    type = "bool-setting",
    name = "BI_Solar_Additions",
    setting_type = "startup",
    default_value = true,
    order = "a[modifier]-a[Solar_Farm]",
}

setting_list.BI_Bio_Fuel = {
    type = "bool-setting",
    name = "BI_Bio_Fuel",
    setting_type = "startup",
    default_value = true,
    order = "a[modifier]-b[Bio_Fuel]",
}

setting_list.BI_Bio_Cannon = {
    type = "bool-setting",
    name = "BI_Bio_Cannon",
    setting_type = "startup",
    default_value = true,
    order = "a[modifier]-c[Bio_Cannon]",
}

setting_list.BI_Show_musk_floor_in_mapview = {
    type = "bool-setting",
    name = "BI_Show_musk_floor_in_mapview",
    setting_type = "startup",
    default_value = true,
    order = "a[modifier]-d[Musk_floor]",
}

setting_list.BI_Easy_Bio_Gardens = {
    type = "bool-setting",
    name = "BI_Easy_Bio_Gardens",
    setting_type = "startup",
    default_value = false,
    order = "a[modifier]-e[Fluid_fertilizer]",
}

setting_list.BI_Bigger_Wooden_Chests = {
    type = "bool-setting",
    name = "BI_Bigger_Wooden_Chests",
    setting_type = "startup",
    default_value = true,
    order = "a[modifier]-b[Bigger_Wooden_Chests]",
}

        -- Game tweaks
setting_list.BI_Game_Tweaks_Emissions_Multiplier = {
    type = "bool-setting",
    name = "BI_Game_Tweaks_Emissions_Multiplier",
    setting_type = "startup",
    default_value = true,
    order = "b[tweaks]-a[Fuel_emission_multiplier]",
    per_user = true,
}
setting_list.BI_Game_Tweaks_Stack_Size = {
    type = "bool-setting",
    name = "BI_Game_Tweaks_Stack_Size",
    setting_type = "startup",
    default_value = true,
    order = "b[tweaks]-b[Stack_size]",
}
setting_list.BI_Game_Tweaks_Recipe = {
    type = "bool-setting",
    name = "BI_Game_Tweaks_Recipe",
    setting_type = "startup",
    default_value = true,
    order = "b[tweaks]-c1[Recipe]",
}
                                  setting_list.BI_Game_Tweaks_Production_Science = {
    type = "bool-setting",
    name = "BI_Game_Tweaks_Production_Science",
    setting_type = "startup",
    default_value = true,
    order = "b[tweaks]-c3[Production_science]",
}
setting_list.BI_Game_Tweaks_Tree = {
    type = "bool-setting",
    name = "BI_Game_Tweaks_Tree",
    setting_type = "startup",
    default_value = true,
    order = "b[tweaks]-d1[Trees]",
}
setting_list.BI_Game_Tweaks_Small_Tree_Collisionbox = {
    type = "bool-setting",
    name = "BI_Game_Tweaks_Small_Tree_Collisionbox",
    setting_type = "startup",
    default_value = true,
    order = "b[tweaks]-d2[Tree_collision_box]",
}
setting_list.BI_Game_Tweaks_Player = {
    type = "bool-setting",
    name = "BI_Game_Tweaks_Player",
    setting_type = "startup",
    default_value = false,
    order = "b[tweaks]-e[Player_tweaks]",
}
setting_list.BI_Game_Tweaks_Bot = {
    type = "bool-setting",
    name = "BI_Game_Tweaks_Bot",
    setting_type = "startup",
    default_value = false,
    order = "b[tweaks]-f[Bot_tweaks]",
}


-- Compatibility with other mods (optional)
  -- Industrial Revolution + AAI Industry
if not (mods["IndustrialRevolution"] or mods["aai-industry"]) then
  setting_list.BI_Game_Tweaks_Disassemble = {
      type = "bool-setting",
      name = "BI_Game_Tweaks_Disassemble",
      setting_type = "startup",
      default_value = true,
      order = "b[tweaks]-c2[Disassemble]",
  }
end


  -- Lua API global Variable Viewer (gvv)
if mods["gvv"] then
  setting_list.BI_Enable_gvv_support = {
      type = "bool-setting",
      name = "BI_Enable_gvv_support",
      setting_type = "startup",
      default_value = false,
      order = "c[compatibility]-c1[debugging_gvv]",
  }
end

local list = {}
for name, setting in pairs(setting_list) do
    data:extend({setting})
end
--[[
Types of settings:
        <20> startup - game must be restarted if changed (such a setting may affect prototypes' changes)
        <20> runtime-global - per-world setting
        <20> runtime-per-user - per-user setting

Types of values:
        <20> bool-setting
        <20> double-setting
        <20> int-setting
        <20> string-setting

Files being processed by the game:
        <20> settings.lua
        <20> settings-updates.lua
        <20> settings-final-fixes.lua

Using in DATA.lua:
data:extend({
   {
      type = "int-setting",
      name = "setting-name1",
      setting_type = "runtime-per-user",
      default_value = 25,
      minimum_value = -20,
      maximum_value = 100,
      per_user = true,
   },
   {
      type = "bool-setting",
      name = "setting-name2",
      setting_type = "runtime-per-user",
      default_value = true,
      per_user = true,
   },
   {
      type = "double-setting",
      name = "setting-name3",
      setting_type = "runtime-per-user",
      default_value = -23,
      per_user = true,
   },
   {
      type = "string-setting",
      name = "setting-name4",
      setting_type = "runtime-per-user",
      default_value = "Hello",
      allowed_values = {"Hello", "foo", "bar"},
      per_user = true,
   },
})

Using in LOCALE.cfg:
        [mod-setting-name]
        setting-name1=Seting name
        [mod-setting-description]
        setting-name1=Seting description

Using in CONTROL.lua and in other code for reading:
        EVENT: on_runtime_mod_setting_changed - called when a player changed its setting
                event.player_index
                event.setting
        GET: settings.startup["setting-name"].value - current value of startup setting; can be used in DATA.lua
        GET: settings.storage["setting-name"].value - current value of per-world setting
        GET: set = settings.get_player_settings(LuaPlayer) - current values for per-player settings; then use set["setting-name"].value
        GET: settings.player - default values
]]