
doc:   [
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "pre"}, [
            DocGroup({"client": "a", "tag": "caret"}, []),
            DocGroup({"tag": "caret", "client": "b"}, []),
            DocChars("Yx"), DocGroup({"tag": "caret", "client": "d"}, []),
            DocChars("8v D7Ln  ")
        ])
    ]),
    DocGroup({"tag": "h1"}, [
        DocChars("2L")
    ]),
    DocGroup({"tag": "h1"}, [
        DocGroup({"tag": "caret", "client": "c"}, []),
        DocChars("B")
    ]),
    DocGroup({"tag": "pre"}, [
        DocChars(" "), DocGroup({"client": "e", "tag": "caret"}, []),
        DocChars("d hat\'s up with you?")
    ])
]

a_del: [
    DelWithGroup([
        DelGroup([
            DelGroup([]),
            DelGroup([]),
            DelSkip(2), DelWithGroup([]),
            DelSkip(9)
        ])
    ]),
    DelSkip(1)
]
a_add: [
    AddWithGroup([
        AddGroup({"tag": "pre"}, [
            AddGroup({"tag": "caret", "client": "a"}, []),
            AddChars("1N5jf"), AddSkip(2), AddWithGroup([]),
            AddSkip(9)
        ])
    ]),
    AddWithGroup([
        AddGroup({"tag": "caret", "client": "b"}, [])
    ])
]

b_del: [
    DelWithGroup([
        DelWithGroup([
            DelWithGroup([]),
            DelWithGroup([]),
            DelSkip(2), DelWithGroup([]),
            DelSkip(9)
        ])
    ]),
    DelGroup([
        DelChars(2)
    ]),
    DelGroup([
        DelGroup([]),
        DelChars(1)
    ]),
    DelGroup([
        DelSkip(22)
    ])
]
b_add: [
    AddWithGroup([
        AddWithGroup([
            AddChars(" "), AddWithGroup([]),
            AddWithGroup([]),
            AddSkip(2), AddWithGroup([]),
            AddSkip(9)
        ])
    ]),
    AddGroup({"tag": "h1"}, [
        AddGroup({"client": "c", "tag": "caret"}, []),
        AddSkip(22)
    ])
]
