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/usr/share/X11/xkb/types/nokia is in xkb-data 2.10.1-1ubuntu1.

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partial default xkb_types "default" {

    // Some types that are used by Nokia devices and keyboard.
    virtual_modifiers LevelThree;

    type "PC_FN_LEVEL2" {
	modifiers = LevelThree;
	map[None] = Level1;
	map[LevelThree] = Level2;
	level_name[Level1] = "Base";
	level_name[Level2] = "Fn";
    };

};