▽
├─▣ Attr value: id
│ ╙─◈ = "foo"s
│   ┖─◁ #0 [1,0,0] value 1
├─▣ Attr value: class
│ ╙─◈ ~= "bar"s
│   ┖─◁ #1 [0,1,0] value 2
└─▣ Attr value: baz
  ╙─◈ ^= "qux"i
    ┖─◁ #2 [0,1,0] value 3