xkb_types "custom" {
    virtual_modifiers Hyper,NumLock,Alt,LevelThree,LAlt,RAlt,RControl,LControl,ScrollLock,LevelFive,AltGr,Meta,Super,Mode_switch;

    type "ALPHABETIC" {
        modifiers= Shift;
        map[Shift]= Level2;
        level_name[Level1]= "Base";
        level_name[Level2]= "Caps";
    };

    type "ONE_LEVEL" {
        modifiers = none;
        level_name[Level1] = "Any";
    };

    type "SHIFTABLE_TWO_LEVEL" {
        modifiers = Shift;
        map[Shift] = Level2;
        level_name[Level1] = "Base";
        level_name[Level2] = "Shift";
    };

    type "CTRL_ALT" {
        modifiers = Control+Alt;
        map[Control] = Level2;
        preserve[Control] = Control;
        map[Alt] = Level3;
        preserve[Alt] = Alt;
        map[Control+Alt] = Level4;
        level_name[Level1] = "Base";
        level_name[Level2] = "Ctrl";
        level_name[Level3] = "Alt";
        level_name[Level4] = "Ctrl_Alt";
    };

    //# For F keys and virtual terminals

    type "CTRL_AND_ALT" {
        modifiers = Control+Alt;
        map[Control+Alt] = Level2;
        level_name[Level1] = "Base";
        level_name[Level2] = "Ctrl+Alt";
    };

    //# Keyboard mouse keys

    type "ALPHABETIC_WITH_MOUSE" {
        modifiers = Shift+Mode_switch;
        map[Shift] = Level2;
        map[Mode_switch] = Level3;
        level_name[Level1] = "Base";
        level_name[Level2] = "Caps";
        level_name[Level3] = "Mouse";
    };
};