partial default alphanumeric_keys
xkb_symbols "basic" {

    // adds the Lahu tone characters to the basic keyboard

    include "latin"

    name[Group1]= "Lahu";

    key <AD11> { [ UA788,	 U02C6,  bracketleft, 	braceleft  ] };
    key <AD12> { [ U02EC,  U02C7,  bracketright,  braceright ] };
    key <BKSL> { [ U02CD,  U02C9,  backslash,	    brokenbar  ] };

    include "level3(ralt_switch_multikey)"
};