libxkbcommon/test/data/compat/pc

default partial xkb_compatibility "pc" {

    // Sets the "Alt" virtual modifier.

    virtual_modifiers  Alt;

    setMods.clearLocks= True;
    interpret Alt_L+Any {
	virtualModifier= Alt;
	action = SetMods(modifiers=modMapMods);
    };

    interpret Alt_R+Any {
	virtualModifier= Alt;
	action = SetMods(modifiers=modMapMods);
    };
};