Branch :
default
xkb_symbols {
name[1] = "xxx";
name[1] = "yyy";
augment name[1] = "zzz";
key <A> { [a, A] };
key <S> { [s, S] };
modifier_map Shift { <A> };
modifier_map Control { <S> };
key.repeat = false;
key.vmods = M1;
key.vmods = M2;
augment key.vmods = M3;
key <D> { vmods = M4, [d, D] };
augment key <F> { vmods = M4, [f, F] };
augment key <F> { vmods = M1, repeat = true };
};