
doc:   [
    DocGroup({"tag": "bullet"}, [
        DocGroup({"tag": "p"}, [
            DocChars("b"), DocGroup({"tag": "caret", "client": "a"}, []),
            DocChars("F ")
        ]),
        DocGroup({"tag": "h1"}, [
            DocGroup({"client": "c", "tag": "caret"}, []),
            DocChars("G6a "), DocGroup({"tag": "caret", "client": "d"}, []),
            DocChars("7 8eKllo w"), DocGroup({"tag": "caret", "client": "b"}, [])
        ])
    ]),
    DocGroup({"tag": "p"}, [
        DocChars(" hat\'s up with you?")
    ])
]

a_del: [
    DelWithGroup([
        DelWithGroup([
            DelSkip(1), DelGroup([]),
            DelChars(1)
        ])
    ])
]
a_add: [
    AddWithGroup([
        AddWithGroup([
            AddSkip(1), AddGroup({"client": "a", "tag": "caret"}, []),
            AddChars("H")
        ])
    ])
]

b_del: [
    DelGroup([
        DelWithGroup([
            DelChars(1), DelWithGroup([]),
            DelSkip(2)
        ]),
        DelWithGroup([
            DelWithGroup([]),
            DelSkip(4), DelWithGroup([]),
            DelSkip(9), DelChars(1), DelGroup([])
        ])
    ])
]
b_add: [
    AddWithGroup([
        AddChars("7 o"), AddWithGroup([]),
        AddSkip(1), AddGroup({"tag": "caret", "client": "b"}, []),
        AddSkip(1)
    ]),
    AddWithGroup([
        AddWithGroup([]),
        AddSkip(4), AddWithGroup([]),
        AddSkip(9), AddChars("G")
    ])
]
